University of Delhi 2006 B.Sc Zoology (hons) - Question Paper

paper -1 non chordata
Time -3 hours Maximum Marks -55

1. (a) describe (Marks 6)

(1) strobilization, (2) bilaterl symmetry,(3)cephalization (4) polymorphism
(5) metamerism, (6) parthenogenesis

(b) match the subsequent terms: (Marks3)

column A columnB

i. paramoecium crab
ii.holozoic earthworm
iii.velum palaemon
iv. zoea amoeba
v.typhosole medusa
vi. haemocyanin kinetodesma

(c) Classify the subsequent upto order and provide their scientific names : (Marks 10)

i. sea fan , ii. silver fish , iii. cray fish , iv. cuttle fish, v king crab

2. (a) discuss any 2 of the subsequent with the help of diagrams. (Marks 4)

(i) alternation of generations in elphidium
(ii) life cycle of Monocystis

(b) define the leuconoid canal system in detail. (marks 5)

3. provide a detailled account of various kinds of larvae of crustacea with their diagrams and examples.(marks 9)

4. (a) What is an ommatidium? define its structure and function in detail. (marks 5)

(b) provide the structure and function of gill in Lamellideus. (marks 4)

5. (a) provide an account of Onychophora and explain their affinities. (marks 5)

(b) elaborate Trilobites? define. (marks 4)


6. (a) provide the different theories of the formation of coral reefs. (marks 5)


(b) provide an account of adaptation in Helminthes. (marks 4)


7. Short notes on any three: (Marks 9)

i. Metamorphosis in insects

Earning:   Approval pending.