CSS Zoology Past Paper 2007
Paper-I
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
SECTION-I
Q. No. 2.
(a) Canal system is found in Porifera, explain its types & significance
(b) In insects, respiration is through tracheal tubes, explain its structure along with its working
(c) Describe the structure and types of foot in Mollusca
Q. No. 3.
(a) How are Platyhelminthes adapted for parasitic mode of life
(b) Describe complete metamorphosis in an insect
(c) Some Protozoa are medicinally important, explain at least three such Protozoa
Q. No. 4. Write note on the following:
(a) Water vascular system in Echinodermata
(b) Corals
(c) Trochophore larva
(d) Shell in Mollusca
SECTION-II
Q. No. 5.
(a) Amount of yolk determines the cleavage type, describe various types of cleavages found in vertebrates
(b) Describe placentation in mammals, explain various types
(c) Differentiate between the scales of fishes and reptiles
Q. No. 6.
(a) How vertebrate kidney was evolved
(b) How birds migrate, explain various factors which are involved in their migration
Q. No. 7. Write note on the following:
(a) Amphioxus
(b) Amphibian heart
(c) Gastrulation in birds
(d) Snake biting
Paper-II
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2.
(a) What is the structure and role of Nucleolus in the cell
(b) Explain Polymorphism in Lysosomes
Q. No. 3.
(a) Describe various steps involved in Translation
(b) What are various functions of Endoplasmic Recticulum
Q. No. 4.
(a) How CO2 is transported in higher animals? Explain various methods
(b) What is the relationship between the availability of water and the nitrogenous waste products produced in animals
Q. No. 5.
(a) Explain the law of Independent assortment by taking examples from animals
(b) Discuss various chromosomal aberrations along with their role
Q. No. 6.
(a) Prove the role of Natural Selection in Darwinian Evolution by examples
(b) What is a species, how they were evolved, discuss various ideas
Q. No. 7.
(a) Explain Biogeochemical cycle, with the help of Nitrogen cycle
(b) Name various zones of a deep freshwater pond. What type of life is present in each zone
Q. No. 8. Write notes on the following:
(a) Transcriptional bubble
(b) Nerve Impulse
(c) Pituitary
(d) Green House effect