WBCS(Main)-2002 Zoology Paper-I Question Paper

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                                                WEST   BENGAL   CIVIL  SERVICE 

                                                           EXAMINATION - 2002

                                                                Zoology Paper-I

 

Time Allowed-3 Hours                                                                                        Full Marks-100 

                                          Furnish only essential illustrations where necessary.

                                                                     Group - A 

                                                        (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.     4x5

 

                                                                     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.     4x5

***

 

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