Total No. of Printed Pages 3 Roll No. ............................ 1[CCE.M]1
Zoology-II

Time Three Hours Maximum Marks 300

INSTRUCTIONS

Answers must be written in English.


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


The answer to each question or part thereof should begin on a fresh page.

Your answers should be precise and coherent.


The part/parts of the same question must be answered together and should not be interposed between answers to other questions.


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


If you encounter any typographical error, please read it as it appears in the text book.
(viii) Candidates are in their own interest advised to go through the General Instructions on the back side of the title page of the Answer Script for strict adherence.

HRI-28393 1 Contd.

No continuation sheets shall be provided to any candidate under SECTION-B any circumstances.

5. Attempt any three of the following


Candidates shall put a cross on blank pages of Answer Script.


No blank page be left in between answer to various questions.



SECTION-A

1. Attempt any three of the following

Fluid mosaic model of plasma membrane.


Define and give characters of multiple alleles, explain by taking examples of Drosophila and blood.


Different chromosomal sex determination mechanisms, give in brief ratio theory of sex determination.


Isolating mechanisms and their impact on insular fauna with one suitable example. 25×3=75



2. Differentiate between smooth and rough endoplasmic reticulum. Give functions of smooth endoplasmic reticulum.
Describe cytoplasmic inheritance with two suitable examples. 50

3. Give an account in brief on DNA replication.
Give in brief about the positive eugenics. 50

4. Write short notes (around 200 words each) on the following

Name Zoogeographical realms and explain any one of them


NeoLamarckism


Cladistics. 50



Immunoglobulins


Pheromones in insects


Fate maps of frog


Define regeneration, give its mechanisms with suitable examples. 25×3=75



6. Give an account of mode of action of steroid hormones and its function.
Give an account of hormonal control of metamorphosis in insects. 50

7. Give an account of Mitchell's chemiosmotic theory for ATP synthesis during electron transport.
Give an account of absorption of different food metabolites. 50

8. Write short notes on the following in about 200 words each

Action potential


Functions of placenta in mammals


Gastrulation in Branchiostoma. 50



HRI-28393 2 Contd. HRI-28393 3