Mohan Lal Sukhadia University (MLSU) 2001 ZOOLOGY - First - (Invertebrates and Evolution) - Question Paper

1
Second Year exam of the
Three Year Degree Course, 2001
ZOOLOGY
First Paper
(Invertebrates and Evolution)
Time: three Hours
[ Maximum Marks :50]
Attempt any 5 questions,
selecting at lowest 1 ques. from every unit,
All ques. carry equal marks.

UNIT – I

1. Write general characters of phylum mollusca and
classify it upto classes, giving at lowest 2 examples of
every class.

2. define the respiratory organs and mechanism of
respiration in pila.

UNIT-II

3. What do you understand by "Ciliary feeder"? define
it in connection with alimentary canal of Balanoglossus.

4. provide general characters of phylum echinodermata and
its classes with example.

UNIT-III

5. describe the term variation. provide detailed account of
chromosomal variation and their sources.

6. provide an account of different types of isolating
mechanism obtained in nature. provide their importance in
speciation.

UNIT IV

7. What is fossil? Write the formation of fossil with
diagram.

8. describe adaptation. Write detailed account of structural
adaptation.

UNIT-V
9. What is Organic evolution? define the embryological
evidences of evolution.

10. Write notes on any 2 of the following:
(a) Natural selection
(b) Oriental region
(c) Neo-Lamarkism.

Earning:   Approval pending.