SECOND YEAR B. Sc. HONOURS EXAMINATION,
2011
Subject: Zoology
Course No. Zool. 202
Full Course Name: Amphibia and Reptilia
Full Marks: 50 Time:
3(Three) hours
(N.B: Answer any Five Questions.
Illustrate yours answers wherever necessary.
Figures
in the margin indicate marks.)
1.
Classify Amphibia up to
Order citing three diagnostic characters and one example of each.10
2.
(a) Mention three
anatomical changes which transformed the ancestral amphibians into land adapted
reptiles.5
(b) Describe various types of
skull found in reptiles.5
3.
(a) What are the
secondary sex characters in Amphibia?5
(b) Give a brief account of
the parental care in Amphibia.5
4.
(a) What is a tadpole?3
(b) Discuss how amphibians are
adapted for aquatic life?7
5.
(a) Why are
rhynchocephalians called ‘Living Fossil’?5
(B) Comment on the status and
affinities of Sphenodon.5
6.
(a) Mention three
differentiate between venomous and non- venomous snakes giving one example of each.3
(b) Describe biting apparatus
of a venomous snake.7
7.
Write an essay on the
Mesozoic reptiles.10
8.
(a) What are mammal
like reptiles?5
(b) Give an account of the
stem reptiles.5
9.
Write notes on any four
of the following;2.5x4=10
a.
Burrowing amphibians;
b.
Warts;
c.
Synapsida;
d.
Sea turtles;
e.
Crocodiles;
f.
Turtle shell.
