Loyola College B.Sc. Zoology April 2003 Invertebrata Question Paper PDF Download

LOYOLA  COLLEGE (AUTONOMOUS), CHENNAI-600 034.

B.Sc. DEGREE  EXAMINATION  – ZOOLOGY

first SEMESTER  – APRIL 2003

ZO 1500  ZOO 500 invertebrata

05.04.2003

1.00 -4.00                                                                                           Max: 100 Marks

 

PART A                             (10 ´ 2 = 20 Marks)

 

Answer ALL the questions in each two or three sentences:

 

  1. What is cyclosis?
  2. How are corals reefs formed?
  3. What is parapodium? Mention the functions.
  4. What is Hirudin?
  5. What is petasma?
  6. What is radula?
  7. What is nephridium?
  8. Comment on ink sac.
  9. What is cysticercus?
  10. What is pedipalp and mention its function?

 

 

 

PART B                              (4´ 10 = 40 Marks)

 

Answer any FOUR of the following

 

  1. Draw neat diagrams of T.S of Nereis and Leech and label the parts.
  2. Explain the different types of reproduction in Paramecium.
  3. Discuss briefly the life history of Ascaris.
  4. Explain the characteristics of Peripatus and its significance.
  5. Explain with suitable diagram two types of mouth parts in insects.
  6. Explain the respiratory mechanism in Pila.

 

           

PART C                          (2´ 20 = 40 Marks)                   

Answer any two of the following

 

17.  What is alternation of generation? Explain with a suitable example.

  1. Discuss the structure and function of water vascular system in starfish.
  2. Write an essay on metamerism in Annelida.
  3. Give an account of nematode parasites of man.

 

 

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