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  Question 1

Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?

A : Adenine, Thymine - Purines
B : Thymine, Uracil - Pyrimidines
C : Uracil, Cytosine - Pyrimidines
D : Guanine, Adenine - Purines


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    .

     Correct answer is : A

     Solution :
      Adenine and guanine are purines, whereas, Uracil, Thymine, Cytosine are pyrimidines.

  •   Question 2

    Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/ linkage?

    A : Down syndrome - 44 autosomes + XO
    B : Klinefelter syndrome - 44 autosomes + XXY
    C : Colour blindness - Y-linked
    D : Erythroblastosis foetalis - X-linked


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     Correct answer is : B

     Solution :
      Downs syndrome - 45 + XX or 45 + XY

  •   Question 3

    In the DNA molecules

    A : There are two strands which run antiparallel-one in 5'-> 3' direction and other in 3'->5'
    B : The total amount of purine nucleotides and pyrimidine nucleotides is not always equal
    C : There are two strands which run parallel in the 5'->3' direction
    D : The proportion of Adenine in relation to thymine varies with the organism


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    .

     Correct answer is : A

     Solution :
      The 2 strands of DNA are antiparallel one in 5' -> 3' direction and the other in 3' -> 5' direction.

  •   Question 4

    What is true about the isolated small tribal populations?

    A : There is no change in population size as they have a large gene pool
    B : There is a decline in population as boys marry girls only from their own tribe
    C : Hereditary diseases like colour blindness do not spread in the isolated population
    D : Wrestlers who develop strong body muscles in their life time pass this character on to their progeny


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     Correct answer is : B

     Solution :
      aq. character as strong muscles of a wrestler obtained by regular exercise will not be transmitted to the next generation. Gene pool of a population will consist of a large number of genes which will vary in their frequencies. These frequencies also depend on proportion of various genotypes in the total population. Small tribal population will have small gene pool. Hereditary diseases like colour blindness will spread in isolated population due to inbreeding. There is a decline in

  •   Question 5

    Which one of the following scientist's name is correctly matched with the theory put forth by him?

    A : Mendel - Theory of Pangenesis
    B : Weismann - Theory of continuity of Germplasm
    C : Pasteur - Inheritance of acquired characters
    D : de Vries - Natural selection


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     Correct answer is : B

     Solution :
      Following are the right matching pairs. de Vries - Mutation theory Darwin - Theory of pangenesis and Natural selection Pasteur - Discarded the theory of spontaneous generation of life and proved that life arises from pre-existing life.

  •   Question 6

    Which one of the following is incorrect about the characteristics of protobionts (coacervates and micropheres) as envisaged in the abiogenic origin of life?

    A : They could maintain an internal environment
    B : They were able to reproduce
    C : They could separate combinations of molecules from the surroundings
    D : They were partially isolated from the surroundings


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     Correct answer is : B

     Solution :
      According to recent literature, coacervates and microsphere do not reproduce.

  •   Question 7

    Darwin's Finches are an excellent example of

    A : Connecting links
    B : Adaptive radiation
    C : Seasonal migration
    D : Brood parasitism


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     Correct answer is : B

     Solution :
      Darwins Finches are examples of evolutionary divergence giving rise to new species, arising from one commmon ancestor, depending upon the habitat.

  •   Question 8

    Which one of the following pairs of items correctly belongs to the category of organs mentioned against it?

    A : Wings of honey-bee and wings of crow - Homologous organs
    B : Thorn of Bougainvillea and tendrils of Cucurbita - Analogous organs
    C : Nictitating membrane and blind spot in human eye - Vestigial organs
    D : Nephridia of earthworm and malpighian tubules of cockroach - Excretory organs


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     Correct answer is : D

     Solution :
      Wings of honey bee and the wings of crow are analogous. Thorn of Bougaivillea and tendrils of Cucurbita are homologous. Blind spot in humans represent the point where the optic nerve will leave the eye ball so it is not vestigeal.

  •   Question 9

    The fruit is chambered, developed from inferior ovary and has seeds with succulent testa in

    A : Cucumber
    B : Pomegranate
    C : Orange
    D : Guava


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     Correct answer is : B

     Solution :
      This forms edible part of pomegranate

  •   Question 10

    The C4 plants are phoptosynthetically more efficient than C3 plants because

    A : They have more chloroplasts
    B : The CO2 compensation point is more
    C : CO2 generated during photorespiration is trapped and recycled through PEP carboxylase
    D : The CO2 efflux is not prevented


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     Correct answer is : A

     Solution :
      C4 plants do not show photorespiration and have more chloroplast in bundle sheath.

  •   Question 11

    The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because

    A : There is a change in the permeability of the inner mitochondiral membrane toward adenosine diphosphate (ADP)
    B : High energy bonds are formed in mitochondrial proteins
    C : ADP is pumped out of the matrix into the intermembrane space
    D : A proton gradient forms across the inner membrane


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     Correct answer is : D

     Solution :
      Proton motive force develop between perimitochondrial space and matrix across inner mitochondrial membrane.

  •   Question 12

    Dry indehiscent single-seeded fruit formed bicarpellary syncarpous inferior ovary is

    A : Cremocarp
    B : Caryopsis
    C : Cypsela
    D : Berry


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     Correct answer is : C

     Solution :
      Cypsela Asteraceae.
    Cremocarp Shizocarpic fruit, as in umbelliferae.
    Caryopsis Indehiscent fruit formed from monocarpellary and superior ovary with basal placentation.

  •   Question 13

    The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of

    A : Transpiration pull
    B : Lignified thick walls
    C : Cohesion and adhesion
    D : Weak gravitational pull


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     Correct answer is : C

     Solution :
      Continuity of water column is maintained by cohesion and adhesion.

  •   Question 14

    Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in

    A : Floral parts
    B : Vessels and tracheid differentiation
    C : Leaf abscission
    D : Annual plants


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     Correct answer is : C

     Solution :
      Abscission provides nutrient movement and rejuvenation of plant.

  •   Question 15

    Vascular tissues in flowering plants develop from

    A : Dermatogen
    B : Phellogen
    C : Plerome
    D : Periblem


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     Correct answer is : C

     Solution :
      Periblem-Ground tissue
    Phellogen-Cork cambium
    Dermatogen-Epidermis

  •   Question 16

    In leaves of C4 plants malic acid synthesis during CO2 fixation occurs in

    A : Guard cells
    B : Epidermal cells
    C : Mesophyll cells
    D : Bundle sheath


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     Correct answer is : C

     Solution :
      Bundle sheath malic acid is transported from mesophylls.

  •   Question 17

    Importance of day length in flowering of plants was first shown in

    A : Petunia
    B : Lemna
    C : Tobacco
    D : Cotton


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     Correct answer is : C

     Solution :
      Discovered by Garnar & Allard in a maryland mammoth variety of tobacco.

  •   Question 18

    Endosperm is consumed by developing embryo in the seed of

    A : Maize
    B : Coconut
    C : Castor
    D : Pea


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     Correct answer is : D

     Solution :
      Other three are endospermic/albuminous seeds

  •   Question 19

    Nitrogen fixation in root nodules of Alnus is brought about by

    A : Azorhizobium
    B : Bradyhizobium
    C : Clostridium
    D : Frankia


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     Correct answer is : D

     Solution :
      Frankia is actinomycete. Bradyrhizobium-Root nodules in soyabean.

  •   Question 20

    The energy releasing process in which the substrate is oxidised without an external electron acceptor is called

    A : Glycolysis
    B : Fermentation
    C : Photorespiration
    D : Aerobic respiration


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     Correct answer is : B

     Solution :
      Fermentation consumes NADH2 and e- acceptor is released as NAD+ not used. While glycolysis uses external e- acceptor as NAD+.

  •   Question 21

    Replum is present in the ovary of flower of

    A : Pea
    B : Lemon
    C : Mustard
    D : Sunflower


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     Correct answer is : C

     Solution :
      Mustard (Brassicaceae) possess false septum in ovary having parietal placentation

  •   Question 22

    The fleshy receptacle of syconus of fig encloses a number of

    A : Mericarps
    B : Achenes
    C : Samaras
    D : Berries


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     Correct answer is : B

     Solution :
      Syconus is fruit type in fig which is composed of many acheneal fruitlets.

  •   Question 23

    Electrons from excited chlorophyll molecule of photosystem II are accepted first by

    A : Ferredoxin
    B : Cytochrome - b
    C : Cytochrome - f
    D : Quinone


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     Correct answer is : D

     Solution :
      Plastoquinone is used as mobile carrier and primary electron acceptor from PS II.

  •   Question 24

    Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?

    A : Monocytes
    B : Neutrophils
    C : Basophils
    D : Eosinophils


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     Correct answer is : C

     Solution :
      Basophils have a function similar to mast cells. So both basophils and mast cells contain heparin, histamine and serotonin.

  •   Question 25

    Which one of the following is the true description about an animal concerned?

    A : Cockroach - 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)
    B : Earthworm - The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine
    C : Frog - Body divisible into three regions - head, neck and trunk
    D : Rat - Left kidney is slightly higher in position than the right one


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     Correct answer is : A

     Solution :
      In rat right kidney is sligtly higher than left because all the organs are concentrated towards left, only in human beings left kidney is higher. In earthworm the correct sequence of alimentary canal is pharynx, oesophagus, gizzard, stomach and intestine. In Frog, neck is absent.

  •   Question 26

    Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product?

    A : B :
    C : D :


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     Correct answer is : C

     Solution :
      Pancreatic juice is released in intestine & contains, Pancreatic -amylase, also called as Amylopsin, it digets 70% of the starch converting it into Maltose, Isomaltose and limit dextrins.

  •   Question 27

    What is vital capacity of our lungs?

    A : Total lungs capacity minus residual volume
    B : Inspiratory reserve volume plus tidal volume
    C : Total lungs capacity minus expiratory reserve volume
    D : Inspiratory reserve volume plus expiratory reserve volume


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     Correct answer is : A

     Solution :
      Vital capacity = TV + IRV + ERV
    Total lung capacity = VC + RV
    So we can say that VC = Total lung capacity - Residual volume.

  •   Question 28

    Which one of the following is the correct difference between Rod Cells and Cone Cells of our retina?

    A : Rod Cells Cone Cells
    Distribution= More concentrated in centre of retina, Evenly distributed all over retina

    B : Visual acuity=High,Low
    C : Visual pigment contained= Iodopsin,Rhodopsin
    D : Overall function=Vision in poor light, Colour vision and detailed vision in bright light


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     Correct answer is : D

     Solution :
      Rod cells are more concentrated towards the periphery. Visual acuity is highest in fovea centralis which contains only cones. Visual pigment in rods cells is rhodopsin, whereas in the cone cells it is iodopsin.

  •   Question 29

    Which one of the following items gives its correct total number?

    A : Cervical vertebrae in humans - 8
    B : Floating ribs in humans - 4
    C : Amino acids found in proteins - 16
    D : Types of diabetes - 3


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     Correct answer is : B

     Solution :
      In human beings floatings ribs are 2 pairs (4), i.e. 11th and 12th ribs.

  •   Question 30

    Given below is a diagrammatic cross section of a single loop of human cochlea




    A : A : Perilymph, B : Tectorial membrane, C : Endolymph
    B : B : Tectorial membrane, C : Perilymph, D : Secretory cells
    C : C : Endolymph, D : Sensory hair cells, A : Serum
    D : D : Sensory hair cells, A : Endolymph, B : Tectorial membrane


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     Correct answer is : A

     Solution :
      In the diagram of human cochlea.
    A. represents - Perilymph
    B. represents - Tectorial membrane
    C. represents - Endolymph
    D. represents - Sensory cells


  •   Question 31

    Given below are four methods (A - D) and their modes of action (a - d) in achieving contraception. Select their correct matching from the four options that follow



    A : A-(b), B-(c), C-(a), D-(d)
    B : A-(c), B-(a), C-(d), D-(b)
    C : A-(d), B-(a), C-(b), D-(c)
    D : A-(c) B-(d), C-(a), D-(b)


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     Correct answer is : B

     Solution :
      Oral contraceptive pills contain estrogen and progesterone hormones, so they alter the ovulatory cycle and mainly prevent ovulation. Condoms are physical barrier, they prevent the sperms reaching cervix. Vasectomy is the surgical and terminal method of birth control in males. They do not prevent sperm production, but hinder sperm transport so the semen will not contain any sperms. IUDS e.g. Copper-T prevent fertilization and mainly implantation.

  •   Question 32

    What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?

    A : Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin
    B : Gastric juice will be deficient in chymosin
    C : Gastric juice will be deficient in pepsinogen
    D : In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin.


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     Correct answer is : D

     Solution :
      Parietal cells/oxyntic cells, their function is to secrete HCl and Castle's intrinsic factor. Pepsinogen, is converted into active pepsin by HCl, i.e. by change in pH.

  •   Question 33

    During the propagation of a nerve impulse, the action potential results from the movement of

    A : Na+ ions from extracellular fluid to intracellular fluid
    B : Ka+ ions from extracellular fluid to intracellular fluid
    C : Na+ ions from intracellular fluid to extracellular fluid
    D : Ka+ ions from intracellular fluid to extracellular fluid


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     Correct answer is : A

     Solution :
      When the threshold stimulus is applied, the permeability of the membrane for sodium ions will change. Voltage gated sodium ion channels open and Na+ ion flows form extracellular fluid to intracellular fluid, the outside becomes negative and inside positive. The membrane is depolarised & when the two ends of this membrane is connected to oscilloscope a potential difference of + 30 mv, called as action potential is generated.

  •   Question 34

    The blood calcium level is lowered by the deficiency of

    A : Calcitonin
    B : Parathormone
    C : Thyroxine
    D : Both Calcitonin and Parathormone


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     Correct answer is : B


  •   Question 35

    The most active phagocytic white blood cells are

    A : Neutrophils and monocytes
    B : Neutrophils and eosinophils
    C : Lymphocytes and macrophages
    D : Eosinophils and lymphocytes


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     Correct answer is : A

     Solution :
      Neutrophils and monocytes have phagocytic function.

  •   Question 36

    Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to

    A : Setae
    B : Coelomic fluid
    C : Blood
    D : Gut peristalsis


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     Correct answer is : B

     Solution :
      Setae help in attachment, but turgidity and hydraulic skeleton is due to coelomic fluid.

  •   Question 37

    In humans, blood passes from the post caval to the diastolic right atrium of heart due to

    A : Pressure difference between the post caval and atrium
    B : Pushing open of the venous valves
    C : Suction pull
    D : Stimulation of the sino auricular node


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     Correct answer is : A

     Solution :
      Blood always flows from higher pressure towards the lower pressure.

  •   Question 38

    In humans, at the end of the first meiotic division, the male germ cells differentiate into the

    A : Spermatozonia
    B : Primary spermatocytes
    C : Secondary spermatocytes
    D : Spermatids


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     Correct answer is : C

     Solution :
      After the first meiotic division primary spermatocytes divide to form secondary spermatocytes. Whereas, after second meiotic division secondary spermatocytes will divide to form spermatids.

  •   Question 39

    Which one of the following is resistant to enzyme action?

    A : Leaf cuticle
    B : Cork
    C : Wood fibre
    D : Pollen exine


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     Correct answer is : D

     Solution :
      Pollen exine : It is formed of sporopollenin which is resistant to microbial, physical and chemical decomposition. Due to presence of sporopollenin, pollens can be preserved for longer period of time in fossil form. Sporopollenin is formed after the oxidative polymerisation of carotenoids.

  •   Question 40

    The length of different internodes in a culm of sugarcane is variable because of

    A : Intercalary meristem
    B : Shoot apical meristem
    C : Position of axillary buds
    D : Size of leaf lamina at the node below each internode


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     Correct answer is : A

     Solution :
      Intercalary meristem : They are remains of apical meristem between permanent tissues and internodes; responsible for primary growth of the plant.

  •   Question 41

    Semiconservative replication of DNA was first demonstrated in :

    A : Salmonella typhimurium
    B : Drosophila melanogaster
    C : Escherichia coli
    D : Streptococcus pneumoniae


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     Correct answer is : C


  •   Question 42

    Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a "triplet" ?

    A : Beadle and Tatum
    B : Nirenberg and Mathaei
    C : Hershey and Chase
    D : Morgan and Sturtevant


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     Correct answer is : B


  •   Question 43

    Point mutation involves :

    A : Deletion
    B : Insertion
    C : Change in single base pair
    D : Duplication


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     Correct answer is : C


  •   Question 44

    In the case of peppered moth (Biston betularia) the black-coloured from became dominant over the light-coloured form in England during industrial revolution. This is an example of

    A : Inheritance of darker colour character acquired due to the darker environment
    B : Natural selection whereby the darker forms were selected.
    C : Appearance of the darker coloured individuals due to very poor sunlight
    D : Protective mimicry


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     Correct answer is : B


  •   Question 45

    Sickel cell anemia is :

    A : Characterized by elongated sickle like RBCs with a nucleus
    B : An autosomal linked dominant trait
    C : Caused by substitute of valine by glutamic acid in the beta globin chain of haemoglobin
    D : Caused by a change in a single base pair of DNA


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     Correct answer is : D


  •   Question 46

    Study the pedigree chart given below
    What does it show ?




    A : Inheritance of a recessive sex-linked disease like haemophilia
    B : Inheritance of a sex-linked inborn error of metabolism like phenylketonuria
    C : Inheritance of a condition like phenylketonuria as an autosomal recessive trait
    D : The pedigree chart is wrong as this is not possible


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     Correct answer is : C


  •   Question 47

    The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because "O" in it refers to having :

    A : No antigens A and B on RBCs
    B : Other antigens besides A and B on RBCs
    C : Overdominance of this type on the genes for A and B types
    D : One antibody only-either anti-A and anti-B on the RBCs


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     Correct answer is : A


  •   Question 48

    Select the incorrect statement from the following :

    A : Baldness is a sex limited trait
    B : Linkage is an exception to the principle of independent assortment in heredity.
    C : Galactosemia is an inborn error of metabolism
    D : Small population size results in random genetic drift in a population


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     Correct answer is : A


  •   Question 49

    Cotyledons and testa respectively are edible parts in

    A : Cashew nut and litchi
    B : Groundnut and pomegranate
    C : Walnut and tamarind
    D : French bean and coconut


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     Correct answer is : B


  •   Question 50

    An example of a seed with endosperm, perisperm and caruncle is

    A : Castor
    B : Cotton
    C : Coffee
    D : Lily


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     Correct answer is : A


  •   Question 51

    Guard cells help in :

    A : Fighting against infection
    B : Protection against grazing
    C : Transpiration
    D : Guttation


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    .

     Correct answer is : C


  •   Question 52

    Manganese is required in

    A : Chlorophyll synthesis
    B : Nucleic acid synthesis
    C : Plant cell wall formation
    D : Photolysis of water during photosynthesis


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    .

     Correct answer is : D


  •   Question 53

    Oxygenic photosynthesis occurs in :

    A : Chlorobium
    B : Chromatium
    C : Oscillatoria
    D : Rhodospirillum


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    .

     Correct answer is : C


  •   Question 54

    A fruit developed from hypanthodium inflorescence is called :

    A : Caryopsis
    B : Hesperidium
    C : Sorosis
    D : Syconus


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    .

     Correct answer is : D


  •   Question 55

    The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is

    A : Differentiating
    B : Maturing
    C : Elongating
    D : Widening


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    .

     Correct answer is : A


  •   Question 56





    A : Tobacco
    B : Tulip
    C : Soybean
    D : Sunnhemp


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    .

     Correct answer is : A


  •   Question 57

    An example of axile placentation is

    A : Marigold
    B : Argemone
    C : Dianthus
    D : Lemon


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    .

     Correct answer is : D


  •   Question 58

    In barley stem vascular bundles are

    A : Closed and radial
    B : Open and scattered
    C : Closed and scattered
    D : Open and in a ring


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    .

     Correct answer is : C


  •   Question 59

    Aerobic respiratory pathway is appropriately termed

    A : Anabolic
    B : Catabolic
    C : Parabolic
    D : Amphibolic


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    .

     Correct answer is : D


  •   Question 60

    Palisade parenchyma is absent in leaves of

    A : Gram
    B : Sorghum
    C : Mustard
    D : Soybean


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    .

     Correct answer is : B


  •   Question 61

    Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :

    A : Hydrophytes
    B : Xerophytes
    C : Mesophytes
    D : Epiphytes


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    .

     Correct answer is : A


  •   Question 62

    Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by :

    A : Position of protoxylem
    B : absence of secondary xylem
    C : Absence of secondary phloem
    D : Presence of cortex


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    .

     Correct answer is : A


  •   Question 63

    Cyclic photophosphorylation results in the formation of :

    A : ATP
    B : NADPH
    C : ATP and NADPH
    D : ATP, NADPH and O2


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    .

     Correct answer is : A


  •   Question 64

    In a standard ECG which one of the following alphabets is the correct represention of the respective activity of the human heart ?

    A : P-depolarisation of the atria
    B : R-repolarisation of ventricles
    C : S-start of systole
    D : T-end of diastole


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     Correct answer is : A


  •   Question 65

    Uric acid is the chief nitrogenous component of the excretory products of

    A : Frog
    B : Man
    C : Earthworm
    D : Cockroach


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    .

     Correct answer is : D


  •   Question 66

    Which one of the following pairs of food compounds in humans reaches the stomach totally undigested

    A : Starch and cellulose
    B : Protein and starch
    C : Starch and fat
    D : Fat and cellulose


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    .

     Correct answer is : D


  •   Question 67

    Which one of the following is correct pairing of a body part and like kind of muscle tissue that moves it ?

    A : Iris Involuntary smooth muscle
    B : Heart wall Involuntary unstriated muscle
    C : Biceps of upper arm smooth muscle fibres
    D : Abdominal wall smooth muscle


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    .

     Correct answer is : A


  •   Question 68

    Compared to blood our lymph has :

    A : More RBCs and less WBCs
    B : No plasma
    C : Plasma without proteins
    D : More WBCs and no RBCs


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    .

     Correct answer is : D


  •   Question 69

    What will happen if the stretch receptors of the urinary bladder wall are totally removed ?

    A : There will be no micturition
    B : Urine will continue to collect normally in bladder
    C : Micturition will continue
    D : Urine will not collect in the bladder


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    .

     Correct answer is : A


  •   Question 70

    Which part of human brain is concerned with the regulation of body temperature ?

    A : Hypothalamus
    B : Medulla Oblongata
    C : Cerebellum
    D : Cerebrum


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    .

     Correct answer is : A


  •   Question 71

    a young infant may be feeding entirely on mother's milk which is white in colour but the stools which the infant passes out is quite yellowish. What is this yellow colour due to ?

    A : Pancreatic juice poured into duodenum
    B : Intestinal juice
    C : Bile pigments passed through bile juice
    D : Undigested milk protein casein


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    .

     Correct answer is : C


  •   Question 72

    Globulins contained in human blood plasma are primarily involved in

    A : Clotting of blood
    B : Defence mechanisms of body
    C : Osmotic balance of body fluids
    D : Oxygen transport in the blood


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    .

     Correct answer is : B


  •   Question 73

    Seminal plasma in humans is rich in :

    A : Fructose and certain enzymes but poor calcium
    B : Fructose and calcium but has no enzyme
    C : Fructose, calcium and certain enzymes
    D : Glucose and certain enzymes but has no calcium


  •  
    .

     Correct answer is : C


  •   Question 74

    Given below is a diagrammatic sketch for a portion of human male reproductive system. Select the correct set of the names of the parts labelled A, B, C, D respectively



    A : Ureter Seminal, vesicle, Prostate, Bulbourethral gland
    B : Ureter ,Prostate ,Seminal vesicle ,Bulbouretharal gland
    C : Vas deferens ,Seminal vesicle ,Prostate ,Bulbourethral gland
    D : Vas deferens ,Seminal vesicle ,Bulbourethral gland ,Prostate


  •  
    .

     Correct answer is : C


  •   Question 75

    Which one of the following is the correct matching of three items and their grouping category ?
    Items=Groups


    A : Cytosine, uracil, thiamine= Pyrimidines
    B : Malleus, incus, cochlea =Ear ossicles
    C : ilium, ischium pubis =Coxal bones of pelvic girdle
    D : Actin, myosin, rodopsin =Muscle proteins


  •  
    .

     Correct answer is : C


  •   Question 76

    Which one of the following statement is true regarding digestion and absorption of food in humans

    A : About 60% of starch is hydrolysed by salivary amylase in our mouth
    B : Oxyntic cells in our stomach secrete the proenzyme pepsinogen
    C : Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+
    D : Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries


  •  
    .

     Correct answer is : C


  •   Question 77

    Which one of the following correctly described the location of some body parts in the earthworm Pheretima ?

    A : Two pairs of accessory glands in 1618 segments
    B : Two pairs of testes in 10th and 11th segments
    C : Four pairs of spermathecae in 47 segments
    D : One pair of ovaries attached at intersegmental septum of 14th and 15 th segments.


  •  
    .

     Correct answer is : B


  •   Question 78

    Elbow joint is an example of :

    A : Ball and socket joint
    B : Pivot joint
    C : Hinge joint
    D : Gliding joint


  •  
    .

     Correct answer is : C


  •   Question 79

    Which one of the following is considered important in the development of seed habit ?

    A : Free-living gametophyte
    B : Dependent sporophyte
    C : Heterospory
    D : Haplontic life cycle


  •  
    .

     Correct answer is : C


  •   Question 80

    One of the synthetic auxin is :

    A : IBA
    B : NAA
    C : IAA
    D : GA


  •  
    .

     Correct answer is : B


  •   Question 81

    One example of animal having a single opening to the ouside that serves both as mouth as well as anus is

    A : Asterias
    B : Ascidia
    C : Fasciola
    D : Octopus


  •  
    .

     Correct answer is : C


  •   Question 82

    Which one of the following structure between two adjacent cells is an effective transport pathway

    A : Plastoquinones
    B : Endoplasmic reticulum
    C : Plasmalemma
    D : Plasmodesmata


  •  
    .

     Correct answer is : D


  •   Question 83

    Which one of the following does not follow the central dogma of molecular biology

    A : Mucor
    B : Chlamydomonas
    C : HIV
    D : Pea


  •  
    .

     Correct answer is : C


  •   Question 84

    Study the four statements (a-d) given below and select the two correct ones out of them
    (a)Alion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers
    (b) Predator star fish pisaster helps in maintaining species diverstiy of some invertebrates
    (c) Predators ultimately lead to the extinction of pery species
    (d) Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders
    The two correct statements are


    A : (c) and (d)
    B : (a) and (d)
    C : (a) and (b)
    D : (b) and (c)


  •  
    .

     Correct answer is : C


  •   Question 85

    Toxic agents present in food which interfere with thyroxine synthesis lead ot the development of

    A : cretinism
    B : simple goitre
    C : thyrotoxicosis
    D : toxic goitre


  •  
    .

     Correct answer is : B


  •   Question 86

    Which stages of cell division do the following figures Aand B represent respectively



    A : Telophase-Metaphase
    B : LateAnaphase-Prophase
    C : Prophase-Anaphase
    D : Metaphase-Telophase


  •  
    .

     Correct answer is : B


  •   Question 87

    A common biocontrol agent for the control of plant disease is

    A : Bacillus thruingiensis
    B : Glomus
    C : Trichoderma
    D : Baculovirus


  •  
    .

     Correct answer is : C


  •   Question 88

    Carrior ions like Na+ facilitate the absorption of substances like

    A : glucose and fatty acids
    B : fatty acids and glycerol
    C : fructose and some amino acids
    D : amino acids and glucose


  •  
    .

     Correct answer is : C


  •   Question 89

    The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy

    A : 5
    B : 6
    C : 3
    D : 4


  •  
    .

     Correct answer is : A


  •   Question 90

    Which two of the following changes (a-d) usually tend to occur in the plain dwellers when theymove to high altitudes (3,500m or more)
    (a) Increase in red blood cell size
    (b) Increase in red blood cell production
    (c) Increased breathing rate
    (d) Increase in the thrombocyte count Changes occurring are


    A : c and d
    B : a and d
    C : a and b
    D : b and c


  •  
    .

     Correct answer is : D


  •   Question 91

    Which one of the following kinds of animals are triploblastic

    A : Sponges
    B : Ctenophores
    C : Corals
    D : Flat worms


  •  
    .

     Correct answer is : D


  •   Question 92

    Stirred-tank bioreactors have been designed for

    A : Purification of the product
    B : Ensuring anaerobic conditions in the culture vessel
    C : Availability of oxygen thronghout the process
    D : Addition of preservatives to the product


  •  
    .

     Correct answer is : C


  •   Question 93

    The kind of epithelium which forms the inner walls of blood vessels is

    A : columnar epithelium
    B : ciliated columnar epithelium
    C : squamous epithelium
    D : cuboidal epithelium


  •  
    .

     Correct answer is : C


  •   Question 94

    Some of the characteristics of Bt cotton are

    A : Medium yield, long fibre and resistance to beetle pests
    B : High yield and production of toxic protein crystals which kill dipteran pests
    C : High yield and resistance to bollworms
    D : Long fibre and resistance to aphids


  •  
    .

     Correct answer is : C


  •   Question 95

    Which one of the following statments about certain given animals is correct

    A : Molluscs are acoelomates
    B : Insects are pseudocoelomates
    C : Flat worms (Platyhelminthes) are coelomates
    D : Roundworms (Aschelminthes) are pseudocoelomates


  •  
    .

     Correct answer is : D


  •   Question 96

    Cu ion released from copper-releasing IntraUterine Devices (IUDs)

    A : increase phagocytosis of sperms
    B : suppress sperm motility
    C : prevent ovulation
    D : make uterus unsuitable for implantation


  •  
    .

     Correct answer is : B


  •   Question 97

    Infectious proteins are present in

    A : Prions
    B : Vioids
    C : Satellite viruses
    D : Geminal viruses


  •  
    .

     Correct answer is : A


  •   Question 98

    Low Ca++ in the body fluid may be the cause of

    A : Anaemia
    B : Angina pectoris
    C : Gout
    D : Tetany


  •  
    .

     Correct answer is : D


  •   Question 99

    Which one of the following statements about morula in humans is correct

    A : It has far less cytoplasm as well as less DNA than in an uncleaved zygote
    B : It has more or less equal quantity of cytoplasm and DNA as in uncleaved zygote
    C : It has more cytoplasm and more DNA than an uncleaved zygote
    D : It has almost equal quantiity of cytoplasm as an uncleaved zygote but much more DNA


  •  
    .

     Correct answer is : D


  •   Question 100

    Select the two correct statements out of the four (a-d) given below about lac operon.
    (a) Glucose or galactose may bind with the repressor and inactivate it
    (b) In the absence of lactose the repressor binds with the operator region
    (c) The Z- gene codes for permease
    (d) This was elucidated by Francois Jacob and jacque Monod
    The correct statements are


    A : a and c
    B : b and d
    C : a and b
    D : b and c


  •  
    .

     Correct answer is : D


  •   Question 101

    During mitosis ER and nucleolus begin to disappear at

    A : Early metaphase
    B : Late metaphase
    C : Early Prophase
    D : Late prophase


  •  
    .

     Correct answer is : D


  •   Question 102

    Seminal plasma in human males is rich in

    A : glucose and calcium
    B : DNA and testosterone
    C : ribose and potassium
    D : fructose and calcium


  •  
    .

     Correct answer is : D


  •   Question 103

    Virus envelope is known as

    A : Virion
    B : Nucleoprotein
    C : Core
    D : Capsid


  •  
    .

     Correct answer is : D


  •   Question 104

    Satellite DNA is useful tool in

    A : Sex determination
    B : Foretic engineering
    C : Genetic engineering
    D : Organ transplantation


  •  
    .

     Correct answer is : B


  •   Question 105

    An element playing important role in nitrogen fixation is

    A : Copper
    B : Manganese
    C : Zinc
    D : Molybdenum


  •  
    .

     Correct answer is : D


  •   Question 106

    Breeding of crops with high level of minerals, vitamins and proteins is called

    A : Biofortification
    B : Biomagnification
    C : Micropropagation
    D : Somatic hybridisation


  •  
    .

     Correct answer is : A


  •   Question 107

    Keel is characteristic of the frowers of

    A : Cassia
    B : Calotropis
    C : Bean
    D : Gulmohur


  •  
    .

     Correct answer is : C


  •   Question 108

    Which one of the following cannot be explained on the basis of Mendel?s Law of Dominance

    A : Out of one pair of factors one is dominant, and the other recessive
    B : Alleles do not show any blending and both the characters recover as such in F2 generation.
    C : Factors occur in pairs
    D : The discrete unit controlling a particular character is called a factor


  •  
    .

     Correct answer is : B


  •   Question 109

    ABO blood groups in humans are controlled by the gene I. It has three alleles - IA, IB and i. Since there are three different alleles, six different genotypes are possible. Howmany phenotyes can occur

    A : 1
    B : 4
    C : 2
    D : 3


  •  
    .

     Correct answer is : B


  •   Question 110

    The one aspect which is not a salient feature of genetic code, is its being

    A : Ambiguous
    B : Universal
    C : Specific
    D : Degenerate


  •  
    .

     Correct answer is : A


  •   Question 111

    Consider the following four statements (a-d) regarding kidney transplant and select the two correctones out of these.
    (a) Even if a kidney transplant is proper the recipient may need to take immuno suppresants for a long time
    (b) The cell-mediated immune response is responsible for the graft rejection
    (c) The B- lymphocytes are responsible for rejection of the graft
    (d) The acceptance or rejection of a kidney transplant depends on specific interferons
    The two correct statements are


    A : c and d
    B : a and c
    C : a and b
    D : b and c


  •  
    .

     Correct answer is : C


  •   Question 112

    Sertoli cells are found in

    A : adrenal cortex and secrete adrenaline
    B : Seminiferous tubules and provide nutrition to germ cells
    C : Pancreas and secrete progesterone
    D : Ovaries and secrete progesterone


  •  
    .

     Correct answer is : B


  •   Question 113

    Which one of the following palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme

    A : 5?-GATATG-3'? , 3'-? CTACTA -5?
    B : 5?-GAATTC-3'? , 3?'- CTTAAG-5'?
    C : 5?'-CACGTA-3'? , 5?'- CTCAGT-3'?
    D : 5?'-CGTTCG-3'? , 3'-? ATGGTA-5'?


  •  
    .

     Correct answer is : B


  •   Question 114

    The two gases making highest relative contribution to the greenhouse gases are

    A : CH4 and N2O
    B : CFC5 and N2O
    C : CO2 and N2O
    D : CO2 and CH4


  •  
    .

     Correct answer is : D


  •   Question 115

    Select the correct statement form the ones given below with resprect to dihybrid cross.

    A : Genes far apart on the same chromosomes show very few recombinations
    B : Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones
    C : Tightly linked genes one the same chromosome show very few recombinations
    D : Tightly linked genes on the same chromosomes show higher recombinations


  •  
    .

     Correct answer is : C


  •   Question 116

    The energy-releasingmetabolic process in which substrate is oxidised without an external electron acceptor is called.

    A : Fermentation
    B : Aerobic respiration
    C : Photorespiration
    D : Glycolysis


  •  
    .

     Correct answer is : D


  •   Question 117

    Phototropic curvature is the result of uneven distribution of

    A : Phytochrome
    B : Cytokinins
    C : Auxin
    D : Gibberellin


  •  
    .

     Correct answer is : C


  •   Question 118

    Select the correct statement from the following

    A : Methanobaeterium is aerobic bacterium found in rumen of cattle
    B : Biogas, commonly called gobar gas, is pure methane
    C : Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aearobic bacteria
    D : Biogas is produced by the activity of aerobic bacteria on animal waste


  •  
    .

     Correct answer is : C


  •   Question 119

    The second maturation division of the mammalian ovum occurs

    A : Until after the ovum has been penetrated by a sperm
    B : Until the nucleus of the sperm has fused with that of the ovum
    C : In the Graafian follicle after the firstmaturation division
    D : Shortly after ovulation before the ovum makes entry into the fallopian tube


  •  
    .

     Correct answer is : A


  •   Question 120

    dB is a standard abbreviation used for the quantitative expression of

    A : Aparticular pollutant
    B : The dominant Bacillus in a culture
    C : Acertain pesticide
    D : The density of bacteria in a medium


  •  
    .

     Correct answer is : A


  •   Question 121

    Vexillary aestivation is characteristic of the family

    A : Solanaceae
    B : Brassicaceae
    C : Fabaceae
    D : Asteraceae


  •  
    .

     Correct answer is : C


  •   Question 122

    Phyllode is present in

    A : Australian Acacia
    B : Opuntia
    C : Asparagus
    D : Euphorbia


  •  
    .

     Correct answer is : A


  •   Question 123

    The common bottle cork is a product of

    A : Xylem
    B : Vascular Cambium
    C : Dermatogen
    D : Phellogen


  •  
    .

     Correct answer is : D


  •   Question 124

    Which one of the following is wrong statement

    A : Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
    B : Nitrosomonas and Nitrobacter are chemoautotrophs
    C : Anabaena and Nostoc are capable of fixing nitrogen in free- living state also
    D : Root nodule forming nitrogen fixers live as aerobes under free living conditions


  •  
    .

     Correct answer is : A


  •   Question 125

    How many plants in the list give below have composite fruits that develop from an inflorescence Walnut, poppy, radish, fig, pineapple, apple, tomato, mulberry

    A : 2
    B : 3
    C : 4
    D : 5


  •  
    .

     Correct answer is : B


  •   Question 126

    Cymose inflorescence is present in

    A : Trifolium
    B : Brassica
    C : Solanum
    D : Sesbania


  •  
    .

     Correct answer is : C


  •   Question 127

    Which one of the following is correctly matched

    A : Potassium - Readily immobilisation
    B : Bakane of rice seedlings - F skoog
    C : Passive transport of nutrients - ATP
    D : Apoplast - Plasmodesmata


  •  
    .

     Correct answer is : A


  •   Question 128

    A process that makes important difference between C3 and C4 plants is

    A : Photosynthesis
    B : Photorespiration
    C : Transpiration
    D : Glycolysis


  •  
    .

     Correct answer is : B


  •   Question 129

    The correct sequence of cell organelles during photorespiration is

    A : Chloroplast, mitochondria, peroxisome
    B : Chloroplast, - vacuole - peroxisome
    C : Chloroplast, - Golgiboidies - mitochondria
    D : Chloroplast, Rough Endoplasmic reticulum- Dictyosomes


  •  
    .

     Correct answer is : A


  •   Question 130

    The coconut water and the edible part of coconut are equivalent to

    A : Mesocarp
    B : Embryo
    C : Endosperm
    D : Endocarp


  •  
    .

     Correct answer is : C


  •   Question 131

    The gynoecium consists of many free pistils in flowers of

    A : Papaver
    B : Michelia
    C : Aloe
    D : Tomato


  •  
    .

     Correct answer is : B


  •   Question 132

    Which one of the following is correctly matched

    A : Chlamydomonas - Conidia
    B : yeast - Zoospores
    C : Onion - Bulb
    D : Ginger - Sucker


  •  
    .

     Correct answer is : C


  •   Question 133

    Both, autogamy and geitonogamy are prevented in

    A : Castor
    B : Maize
    C : Papaya
    D : Cucumber


  •  
    .

     Correct answer is : C


  •   Question 134

    Even in absence of pollinating agents seed seting is assured in

    A : Salvia
    B : Fig
    C : Commellina
    D : Zostera


  •  
    .

     Correct answer is : C


  •   Question 135

    Which one of the following areas in India, is a hotspot of biodiversity

    A : Sunderbans
    B : Western Ghats
    C : Eastern Ghats
    D : Gangetic plain


  •  
    .

     Correct answer is : B


  •   Question 136

    Which one of the following is not a functional unit of an ecosystem

    A : Productivity
    B : Stratification
    C : Energy flow
    D : Decomposition


  •  
    .

     Correct answer is : B


  •   Question 137

    The upright pyramid of number is absent in

    A : Lake
    B : Grassland
    C : Pond
    D : Forest


  •  
    .

     Correct answer is : D


  •   Question 138

    Which one of the following is not a gaseous biogeochemical cycle in ecosystem

    A : Nitrogen Cycle
    B : Carbon Cycle
    C : Sulphur Cycle
    D : Phosphorus Cycle


  •  
    .

     Correct answer is : D


  •   Question 139

    Which one of the following is a wrong statement

    A : Greenhouse effect is a natural Phenomenon
    B : Eutrophication is a natural phenomenon in freshwater bodies
    C : Most of the forests have been lost in tropical areas
    D : Ozone in upper part of atmosphere is harmful to animals


  •  
    .

     Correct answer is : D


  •   Question 140

    The highest number of species in the world is represented by

    A : Algae
    B : Lichens
    C : Fungi
    D : Mosses


  •  
    .

     Correct answer is : B


  •   Question 141

    Yeast is used in the production of

    A : Bread and beer
    B : Cheese and butter
    C : Citric acid and lactic acid
    D : Lipase and pectinase


  •  
    .

     Correct answer is : A


  •   Question 142

    Which one of the following microbes forms symbiotic association with plants and helps then in their nutrition

    A : Glomus
    B : Trichoderma
    C : Azotobacter
    D : Aspergillus


  •  
    .

     Correct answer is : A


  •   Question 143

    A single strand of nucleic acid tagged with a radioactive molecule is called

    A : Plasmid
    B : Probe
    C : Vector
    D : Selectable marker


  •  
    .

     Correct answer is : B


  •   Question 144

    A patient brought to a hospital with myocardial infarction is normally immediately given

    A : Cyclosporin - A
    B : Statins
    C : Penicillin
    D : Streptokinase


  •  
    .

     Correct answer is : D


  •   Question 145

    A nitrogen - fixing microbe associated with Azolla in rice fields is

    A : Frankia
    B : Tolypothrix
    C : Spirulina
    D : Anabaena


  •  
    .

     Correct answer is : D


  •   Question 146

    Which one is a true statement regarding DNA polymerase used in PCR

    A : It is isolated from a virus
    B : It remains active at high temperature
    C : It is used to ligate introduced DNA in recipient cell
    D : It serves as a selectable marker


  •  
    .

     Correct answer is : B


  •   Question 147

    Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin 'A' deficiency

    A : golden rice
    B : Bt- Brinjal
    C : Flaver Savr Tomato
    D : Canolla


  •  
    .

     Correct answer is : A


  •   Question 148

    Which one of the following is a case of wrong matching

    A : Micropropagation - In vitro production of plants in large numbers
    B : Callus - Unorganised mass of cells produced in tissue culture
    C : Somatic hybridization - Fusion of two diverse cells
    D : Vector DNA - site for tRNA synthesis


  •  
    .

     Correct answer is : D


  •   Question 149

    Which part would be most suitable for raising virus free plants for microporpagation

    A : Meristem
    B : Node
    C : Bark
    D : Vascular tissue


  •  
    .

     Correct answer is : A


  •   Question 150

    For transformation, micro - particles coated with DNA to be bombarded with gene are made up of

    A : Silicon or platinum
    B : Gold or Tungsten
    C : Silver or platinum
    D : Platinum or zinc


  •  
    .

     Correct answer is : B


  •   Question 151

    The cyanobacteria are also referred to as

    A : Slime moulds
    B : Blue green algae
    C : Protists
    D : Golden algae


  •  
    .

     Correct answer is : A


  •   Question 152

    Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group

    A : Yeast used in making bread and beer is a fungus
    B : Nostoc and Anabaena are examples of protista
    C : Paramecium and Plasmodium belong to the same kingdom as that of Penicillium
    D : Lichen is composite organism formed from the symbiotic association of an algae and a protozoan


  •  
    .

     Correct answer is : A


  •   Question 153

    In which one of the following the genus name its two characters and its phylum are not correctly matched, whereas the remaining three are correct

    A : B :
    C : D :


  •  
    .

     Correct answer is : C


  •   Question 154

    Select the the correct statement from the following regarding cell membrane

    A : Lipids are arranged in bilayer with polar heads towards the inner part
    B : Fluid mosaic model of cell membrane was proposed by singer and Nicolson
    C : Na+ and K+ ions move across cell membrane by passive transport
    D : Proteins make up 60 to 70% of the cell membrane


  •  
    .

     Correct answer is : B


  •   Question 155

    Given below is the representation of a certain event at a particular stage of a type of cell division which is this stage



    A : Prophase of Mitosis
    B : Both prophase and metaphase of mitosis
    C : Prophase I during meiosis
    D : Prophase -II during meiosis


  •  
    .

     Correct answer is : C


  •   Question 156

    Which one out of A - D given below correctly represents the structural formula of the basic amino acid



    A : A
    B : B
    C : C
    D : D


  •  
    .

     Correct answer is : D


  •   Question 157

    What is true about ribosomes

    A : These are found only in eukaryotic cells
    B : These are self - splicing introns of some RNAs.
    C : The prokaryotic ribosomes are 80 S, where 'S' stands for sedimentation coefficient
    D : There are composed of ribonucleic acid and proteins


  •  
    .

     Correct answer is : D


  •   Question 158

    Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component 'X' in it



    A : Nucleotide-Adenine
    B : Nucleoside-Uracil
    C : Cholesterol-Guanin
    D : Amino acid-NH2


  •  
    .

     Correct answer is : B


  •   Question 159

    Ribosomal RNA is actively synthesized in

    A : Nucleoplasm
    B : Ribosomes
    C : Lysosomes
    D : Nucleolus


  •  
    .

     Correct answer is : D


  •   Question 160

    F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1. It represents a case of

    A : Monohybrid cross with complete dominance
    B : Monohybrid cross with incomplete dominance
    C : Co - dominance
    D : Dihybrid cross


  •  
    .

     Correct answer is : B


  • MY REPORT
    TOTAL = 160
    ANSWERED =
    CORRECT / TOTAL = /160
    POSITIVE SCORE =
    NEGATIVE SCORE =
    FINAL SCORE =