WBCS(Main)-2007 Zoology Paper-I Question Paper

                                                WEST   BENGAL   CIVIL  SERVICE 

                                                           EXAMINATION - 2007

                                                                Zoology Paper-I


Time Allowed-3 Hours                                                                                        Full Marks-100 


                                                                      Group - A 

                                                        (Answer any three questions.)


1.  Mention the characters of Phylum Nemathelminthes।  Describe the Life-history of Wuchereria bancrofti.    5+15


2.  Discuss the affinities of peripatus with Annelida and Arthropoda. Comment on its systematic position.    8+8+4


3.  Discuss the statement - “Birds are glorified reptiles”।      20


4.  Make a comparison in tabular from between cartilagenous and Bony fishes. Write on the functions of swim-bladder.      14+6


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

     (a)  Appendage

     (b)  Components of circulatory system 

     (c)  Corals 

     (d)  Importance of Neopelina

     (e)  Retrogressive metamorphosis

     (f)  External morphology of Monotremata.     5x4



                                                            Answer any two questions.


6.  What is culture fishery ?   Outline the process of pisciculture under inland fishery.  Discuss the methods of induced breeding.       2+4+14


7.  Define Ecosystem.   Discuss the nature of energy flow in ecosystem.   What is solar flux ?      4+12+4


8.  Write on the two major groups of animal behaviour.  Write on the methods of studying animal behaviour.     10+10


9.  Write notes on any four of the following :-

    (a)  Secondary pollutants

    (b)  Ganga Action Plan  

    (c)  Variables in Biology

    (d)  Global warming

    (e)  Attributes of organised societies

    (f)  Algal bloom.     5x4