Total No. of Printed Pages—3
3 SEM TDC ZOOH (CBCS) C 5
2 0 2 0
( Held in April–May, 2021 )
ZOOLOGY
( Core )
Paper : C–5
( Diversity of Chordata )
Full Marks : 53
Pass Marks : 21
Time : 3 hours
The figures in the margin indicate full marks
for the questions
1. Fill in the blanks : 1×5=5
(a) Having dorsal tubular nerve cord is a
characteristic feature of _____.
(b) In birds, sound is produced by _____.
(c) Platypus belongs to the subclass _____.
(d) Petromyzon is an example of _____.
(e) Herdmania belongs to the subphylum
_____.
16-21/478 ( Turn Over )
( 2 )
2. Write short notes on any three of the
following : 4×3=12
(a) Poison apparatus in snakes
(b) Catadromous migration
(c) Retrogressive metamorphosis in
urochordata
(d) Affinities of Sphenodon
3. What is parental care? Elaborate the
different patterns of parental care in
Amphibians. 1+5=6
Or
Describe the origin of Tetrapoda. 6
4. What are the advanced features of
vertebrates over protochordates? Discuss the
aerodynamics of flight in Aves. 4+6=10
Or
Describe the various flight adaptations found
in birds and echinoderm theory of origin of
chordates. 7+3=10
5. Write about the affinities of Prototheria. 10
Or
Classify mammals up to orders with example
of each.
16-21/478 ( Continued )
6. Define ‘Zoogeographical Realms’. Describe
the plate tectonic and continental drift
theory. 1+5+4=10
Or
Write about the distribution of vertebrates in
different realms. 10
H H H
16-21—2800/478 3 SEM TDC ZOOH (CBCS) C 5
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