Assam University 2007 B.Sc Zoology TDC Part-I Honours --- First - Question Paper

NTS-07/ ZOOH-1 /055

2007
ZOOLOGY (Honours)
First Paper
(Diversity and Biology of Non-chordates and Chordates and Developmental Biology)
TDC Part-I (New Course)

Full Marks : 70
Pass Marks : 21

Time : three hours

The figure in the margin shows full marks for the ques.

ans 5 questions, taking 1 from every Unit

Unit – I

1. Write 4 salient features of Phylum Protozoa. Name their mode of nutrition. discuss the holozoic nutrition with necessary diagrams. Add a note on autotrophic nutrition. 2+2+(6+2)+2=14
2. What is meant by sexual parasitism? define the life history and pathogenecity of Schistosoma with necessary diagrams. 2+9+3 =14

Unit –II

3. Enlist a few salient features of Annelida and classify it up to residing subclasses with suitable examples. Enumerate the peculiarities in crop and mode of digestion in Leech. (3+6)+(3+2)=14
4. Write brief notes on (any two) : seven x two = 14
(a) Respiration in Prawn
(b) Nervous system in Pila
(c) Structural peculiarities and evolutionary significance of Onychophora
(d) Sense organs in Pila

Unit –III
5. provide an account of the structural peculiarities of Cephalochordata and add a note on
affinities of Amphioxus. 7+7 = 14
6. Draw and define the digestive system of Scoliodon and add a note on Osmoregulation.
10+4 = 14

Unit –IV

7. Name the various exoskeletal structures of Pigeon. Draw and define the internal structure of its heart and discuss the circulation through it. 2+(2+4)+6= 14
8. ans / Write about the subsequent (any two) : seven x two =14
(a) Mode and utility of migration of Birds
(b) Diagrammatic illustration of Mammalian arterial system.
(c) Characteristics of Monotremes
(d) Distinguish ranging from Ratitae & Carinatae.

Unit –V

9. What do you mean by external and internal fertilization? Comment on the biochemical
interactions of gametes before fertilization. Enumerate the events with necessary
illustrations. 2+2+(8+2) =14
10. Write brief notes on (any two) : seven x two = 14
(a) Spermatogenesis
(b) Formation of Blastula in Frog
(c) Cleavage trend in Chordates
(d) Formation of Primitive Streak in Chick.


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Earning:   Approval pending.