CSS Zoology Past Paper 2008
Paper-I
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II by selecting TWO questions from EACH
SECTION. (20×4)
PART-II
SECTION-I
Q. No. 2.
(a) Write an essay on “Protozoa and diseases”
(b) What are coral reefs? Give an account of various forms of coral reefs
(c) Coelenterates show some resemblances with Porifera. Discuss briefly
Q. No. 3.
(a) Give an account of canal system in sponges
(b) What is adaptation? Briefly discuss parasitic adaptations in Platyhelminthes
(c) Define the following terms:
- Polymorphism
- Metamerism
- Parasitism
- Osmoregulation
Q. No. 4.
Describe the water vascular system of Echinodermata
(b) Give an account of human diseases caused by nematodes
(c) What is conjugation? Briefly discuss its significance
Q. No. 5.
Write short notes on:
- Torsion in gastropods
- Flame cells
- Spicules
- Coelom
SECTION-II
Q. No. 6.
(a) Write an essay on flight adaptations of birds
(b) What is cleavage? Describe its types, with examples found in chordates
(c) What are the functions of blood?
Q. No. 7.
(a) What is placenta? Give its classification in mammals according to the mode of implantation
(b) Describe various types of hearts found in vertebrates
(c) Give classification of vertebrate eggs according to the quantity of yolk they contain
Q. No. 8.
Write short notes on:
- Uriniferous tubule of a mammal
- Neuron
- Function of skin
- Structure of bone
Paper-II
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2.
(a) Give an account of the mechanism by which living cells are believed to synthesize proteins
(b) Explain how CO2 is transported by the blood
Q. No. 3.
(a) Describe the structure and function of the cell membrane
(b) How is the nerve impulse generated and conducted
Q. No. 4. (a) Describe prophase I of meiosis in detail with the help of a labeled diagram
(b) Give an account of the digestion of food in mammals
Q. No. 5. Describe the structure and function of the E.R.
(b) What is hemoglobin? How does it carry oxygen in the blood? What happens when carbon monoxide combines with hemoglobin?
(c) Differentiate between pinocytosis and phagocytosis
Q. No. 6. Give an account of Mendel’s law of segregation with an example
(b) What is a vestigial organ? The presence of vestigial organs is taken as evidence of evolution; discuss
Q. No. 7. What are biochemical cycles? Describe the carbon cycle in detail
(b) Give an account of Lamarck’s theory of evolution
Q. No. 8. Write short notes on:
- Natural selection
- Mutation
- Hormones
- Chromosomal aberrations