BZYCT-131 EM 2025 SOLVED ASSIGNMENT

Description

Bachelor’s Degree Programme
(BSCG)
BZYCT-131 :ANIMAL DIVERSITY
Valid from 1st January, 2025 to 31st December, 2025
ASSIGNMENT
(Tutor Marked Assignment)
Course Code: BZYCT-131
Assignment Code: BZYCT-131/TMA/2025
Maximum Marks: 100
Note: Attempt all questions. The marks for each question are indicated against it.
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9.
Make a table of the major Super groups that include the protozoan groups listed
under them giving at least on important characteristic that distinguishes each
group.
a)
b)
a)
b)
a)
b)
a)
b)
a)
b)
Describe canal system in Porifera.
Describe the characteristic features of Cnidarians.
Briefly describe the organisation of Malacostraca. Give a few examples
of decapod malacostracans.
What is a diplosegment? List the characters of class Diplopoda.
What is torsion? Briefly discuss the process of torsion in gastropods.
List the various classes of phylum Echinodermata giving one example for
each class.
Describe the common morphological features of hagfishes and lampreys.
How do they differ from each other?
Define the following terms:
i)
stenohaline
ii)
iii)
iv)
euryhaline
hypoosmotic regulator
rectal glands in sharks
List three groups of adaptations that explain how each contributed to the
success of vertebrates.
Explain the mechanism of circulation in amphibians.
What are the three main reptile lines that evolved from the amniotes during the
Mesozoic era and from which lineage did the present day reptiles evolve? How
would you distinguish among the anapsid, diapsid and synapsid types of skull?
The special adaptations of birds all contribute to two factors essential for flight
namely, more power and less weight. Explain how each of the following
contributes to one or the other or both:
(i)
(ii)
(iii)
Endothermy
Respiratory system
Skeletal system
(iv) Excretory system.
Discuss the modes of development of mammals.
10. Describe the progressive evolution of mammals from their synapsid ancestors.
(10)
(5)
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(4)
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(5)
(10)
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(10)