JUNE 2021
B. Sc. (II Semester) Examination
ZOOLOGY
Paper: ZOO/T2/121
(Vertebrate Biosystematics Comparative Anatomy and Evolution)
Full Marks : 50
Pass Marks : 35%
Time : Two Hours
Notes: (i) Answer all questions as stated
(ii) The figures in the margin indicate full marks for the questions
1. Answer all questions: 2x5= 10
(a) Give four salient features of reptiles.
(b) Name two reptiles inhibiting parental care.
(c) Name two migratory birds.
(d) How many chambers are present in the heart of reptiles?
(e) Name two types of pre-historic man in the course of evolution.
2. Answer any four of the following: 4x4= 16
(a) Describe retrogressive metamorphosis with examples.
(b) Differentiate between poisonous and non-poisonous snakes.
(c) Give an account of dentition in mammals.
(d) Describe the pectoral girdle of mammals.
(e) Explains the concept of Darwinism.
(f) Write a note on adaptive radiation in mammals.
3. Answer any three of the following: 8x3= 24
(a) Describe the salient features of proto-chordates.
(b) Elaborate parental care in amphibians.
(c) Describe the salient features of mammals.
(d) Give a comparative anatomy of forelimbs bones of vertebrates.
(e) Discuss the theory of Lamarckism.
