WEST BENGAL CIVIL SERVICE
EXAMINATION - 2003
Zoology Paper-II
Time Allowed-3 Hours Full Marks-100
Group - A
(Answer any three questions.)
1. Describe the ultrastructures and functions of Golgi bodies. 15+5=20
2. Give an account of protein synthesis in prokaryotes. 20
3. Comment on : (any four)
(a) Turner’s syndrome
(b) Teminism
(c) Okazaki fragments
(d) Alkaptonuria
(e) Palindromic DNA 5 x 4
4. Give an account of chemicai basis of origin of life 20
5. Differentiate between :
(a) Sympatric and allopatric species
(b) Vertical and horizontal classification
(c) Taxonomy and systematics
(d) Hierarchy and key. 5 x 4 =20
6. Write short notes on : (any four)
(a) Primitive streak
(b) Grey crescent
(c) Rathke’s pocket
(d) Coloboma iris
(e) Fertilization membrane. 5x4=20
7. What do you mean by photopic and scotopic visions ? What are the advantages of binocular vision ? State the photochemical changes in the cone cells when light falls on it. What is visual acuity ? 4+4+10+2=20
Group-B
Answer any two questions.
8. Give an account of the role of kidney in acid-base balance. 20
9. State the properties of Enzymes. What do you know about competitive and non-competitive inhibitors ? 15+5=20
10. Write notes on : (any four)
(a) Neoglucogenesis
(b) Heteropolysaccharides
(c) Rancidity
(d) Conjugated proteins
(e) Po’leriske number. 5x4=20
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