Paper-II

Section A
1. Distinguish between any four of the following (Each answer may be in about 150 words):
a. Mitosis and Meiosis
b. Plasmids and Cosmids as vectors
c. Role of mutations and variations in evolution.
d. Species and Subspecies
e. Transcription and Translation (10 × 4 40).
2. Lysosome is the ‘suicide bag’ of the cell. Discuss
3. Give an account of DNA finger printing technique and its importance
4. Write notes on the following:
a. Origin of Life
b. Importance of fossils
c. International Code of Nomenclature
d. Mimicry (10 × 440).

Section B
5. Distinguish between any four of the following (Each answer may be in about 150 words):
a. Hormones and Enzymes
b. Nephron and Neuron
c. Blastula and Gastrula
d. Growth and Regenerations
e. Red blood corpuscles and White blood Corpuscles (10 × 4 40).
6. Give an account of bioenergetics of glycolysis and Krebs cycle
7. Explain the mechanism of hormone action and the importance of second messengers
8. Write notes on the following:
a. In-vitro fertilization
b. Causation of metamorphosis in frog
c. Placentation in humans
d. Baer's Law
e. Cloning × 5 40)