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  • W.B.C.S Main 2002 Optional Question Paper Zoology.
    Posted on January 18th, 2019 in Zoology
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    W.B.C.S Main 2002 Optional Question Paper Zoology.

    W.B.C.S Main 2002 Optional Question Paper Zoology paper 1

    Group – A.Continue Reading W.B.C.S Main 2002 Optional Question Paper Zoology.

    (Answer any three questions.)

     

    1.  Distinguish between protostomia and deuterostomia.  Classify living echinoderms with characters and citing examples.     5+10+5

     

    2.  Describe the structural organization of the locorriotory organs of protozoans. States their modes of functioning.     12+8

     

    3.  State the distinguishing features of poisonous and non-poisonous snakes.  Name the components of poison apparatus of snake with their structural organization.  Give a note on mcchaaism of snake biting.     6+9+5

     

    4.  (a)  What do you mean by missing link ?  Why is Archaeopteryx considered as missing link ?     2+8

    (b)  Describe the structure of a typical feather.  Give a note on different types of feathers of birds.    6+4

     

    5.  Write short notes on any four of the following :

    (a)  Parapodia of Nereis

    (b)  Respiratory pigments

    (c)  Tube feet of starfish

    (d)  Sphenodon

    (e)  Air sacs of pigeon

    (f)  Ruminant stomach.     4×5

     

    Group-B

    Answer any two questions.

     

    6.  What do you mean by ecosphere ?  Name the major components of ecosystem. Give a note on different biotic components of on ecosystem and their significance.     2+3+15

     

    7.  What do you mean by induced breeding ?  Describes in detail the procedure invoked in induced breeding of corps State the principle and advantages of composite fish culture.    2+12+6

     

    8.  Write short notes on any four of the following :

    (a)  Ecological Pyramid

    (b)  Greenhouse effect

    (c)  t-test

    (d)  Circadian rythm

    (e)  Social organization of ants

    (f)  Correlation coefficient.     4×5

    W.B.C.S Main 2002 Optional Question Paper Zoology paper 2

    Group – A

    (Answer any four questions.)

     

    1.  Describe the ultrastructure and functions of mitochondria.    12+4

     

    2.  What is endotherms ?  Give idea on the heat production in the body.  Compare ectothermy and endothcrmy.    3+9+4

     

    3.  What is speciatibn ?  Describe the process of speciation, in brief, taking example of any bistope ?     3+13

     

    4.  Describe the sequential events in the process of fertilization in brief.  What is its significance?    12+4

     

    5.  How does ammonia form in the body ?  Give idea in brief the metabolism of ammonia with reference to ureotelic, ammonotelic and uricotelic organisms.     2+4+5+5

     

    6.  (a)  Give an account of the steps of initiation of DNA replication in an eukaryote. Name the enzymes involved in each step. What is the base sequence characteristic of initiation region ?      3+2+2

    (b)  Give idea about the PCR.     4

    (c)  In recombinant DNA studies, what is the role of restriction endo-nuclease, terminal transferase, vectors, host cells, and calcium chloride.     5

     

    7.  Write notes on any four of the following ;

    (a) Foetal membrane in chick

    (b) Type concept

    (c) Mimicry

    (d) Hardy-Weinberg equilibrium

    (e) DNA as a genetic material

    (f) Mechanism of image formation in ommatidium.    4×4

     

    GROUP-A

    Answer any four questions,

     

    8.  What are difference between phenetic and cladistic concept in systematies ?  What are the weaknesses of the purely phenetic method ?      8+8

     

    9.  What is osmoregulation ?  Describe the process of osmoregulation in protozoans and annclidas.    6+10

     

    10.  Distinguish between sex determination and sez differentiation. Give idea on the sex determination methods in Drosophilasp.    4+12

     

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