CSS Zoology Past Paper 2001
Paper-I
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
SECTION-I
Q. No. 2
(a) Briefly describe four different methods of asexual reproduction met in Protozoa.
(b) Give a brief account of different types of spicules found in Porifera.
(c) Define polymorphism. Discuss the phenomenon with reference to order Siphonophora (Coelenterata).
Q. No. 3
(a) Write a short essay on affinities of Ctenophora.
(b) Discuss the general adaptation of parasitic mode of life with special reference to phylum Platyhelminthes.
(c) Give an account of two broad types of nephridia found in Polychaeta.
Q. No. 4
(a) Define metamorphosis and discuss the phenomenon with reference to insects.
(b) Write a short essay on torsion in Gastropoda.
(c) Discuss regeneration with special reference to Echinoderms.
SECTION-II
Q. No. 5
(a) Discuss the possible origin of the Chordates.
(b) Give a brief account of the evolutionary changes in the heart in different classes of Chordates.
(c) Write a short note on the anatomy of the mammalian kidney.
Q. No. 6
(a) Describe the two basic types of cleavage with reference to Chordates.
(b) Write an essay on placentation in mammals.
(c) Develop an outline on adaptation of flight in birds.
Q. No. 7
Write short notes on the following:
(a) Caudal fins in fish
(b) Notchord
(c) Viviparity
(d) Feathers in birds
Paper-II
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2
Give an account of the following:
(a) Meiosis and its significance.
(b) The role of nucleic acid in protein synthesis.
Q. No. 3
Write short notes on:
(a) Nucleolus.
(b) Lysosome.
(c) Chromosomal aberrations.
(d) Gene concept.
Q. No. 4
Give in detail the account of functions of various hormones produced by different lobes of the pituitary gland.
Q. No. 5
Discuss in detail the relationship between ontogeny and phylogeny.
Q. No. 6
Give an account of sources, effects, and control of air pollution.
Q. No. 7
Give an account of:
(a) Sex-linked inheritance.
(b) Linkage and crossing over.
Q. No. 8
Write short notes on:
(a) Nitrogen cycle.
(b) Lateral line system.
(c) Respiratory pigments found in animals.
(d) Erythrocytes.