C. S. (MAIN) EXAM, 2009

ZOOLOGY

Paper-I

Time Allowed · Three Hours Maximum Marks 300

INSTRUCTIONS

Each question is printed both in Hindi and
in English.

Answers must be written in the medium specified in the Admission Certifi.cate issued to you, which must be stated clearly on the cover of the answer-book in the space provided for the purpose. No marks will be given for the ansu;ers written in a medium other than that specified in the Admission Certificate.

Candidates should attempt Question Nos. 1. and 5 which are compulsory, and any three of the remaining questions selecting at least one question from each Section.

The number of marks carried by each question is indicated at the end of the question.

Illustrate your ansu;ers with suitable diagrams, wherever necessary.

Section-A

Write concise accounts of any three of the following in about 200 words each 20X3=60

Symmetry in non-chordates
Life history of Obelia
General features of Monotremata
Digital tips in vertebrates

2. Write brief notes (of about 200 words each) on the following 20x3=60

Flightless birds
Parasitism in Crustacea
Affinities and systematic position of
Balanoglossus

Describe torsion and detorsion 1n Mollusca. 30
What lS metamerism? Describe its importance in invertebrates. 30

4. Write brief notes (of about 200 words each) on the follo,ving 20x3=60

Parental care 1n Amphibia
Migration of fishes
Social behaviour of Apis

Section-B

5. Write brief accounts of any three of the following in about 200 words each 20x3=60

Biological examples of Regression Analysis
Gel Electrophoresis
Radioactive Tracers
Instinct and Learning

6. Describe ecological succession giving suitable examples. 30
What are transgenic animals? Describe their importance in research. 30

7. Write short notes (of about 200 words each) on the following 20x3=60

Social hierarchies 1n Primates
Environmental biodegradation
Applying remote sensing 1n studying distribution of animals

8. Comment on the following 30x2=60
Navigation in birds
Forensic biotechnology and its applications

Note English version of the Instructions 1s
printed on the front cover of this
question paper.