Paper-II

Section A
1. Distinguish between any four of the following (each answer may be in about 150 words):
a. DNA and RNA.
b. Eukaryotic and Prokaryotic cells.
c. Dominant and Recessive characters.
d. Metaphase I and Anaphase I
e. Neo-Darwinism and Neo-Lamarckism (10 × 4 40).
2. Mitochondria is the power house of the cell. Discuss
3. State and explain the mutation theory of evolution
4. Write notes on the following
a. Plasma Membrane
b. Pedigree Analysis
c. Zoological Nomenclature
d. Genes (10 × 4 40)

Section B
1. Distinguish between any four of the following (each answer may be in about 150 words):
a. Vitamin A and Vitamin B
b. Primary, Secondary and Tertiary structure of a protein.
c. Hormones and Pheromones.
d. Isometric and Isotonic contraction of muscle.
e. Mesolecithal and Megalecithal eggs (10 × 4 40).
2. Give an account of the origin and propagation of nerve impulse along a non-myelinated nerve fibre
3. Trace the early development of the heart in chick
4. Write notes on the following:
a. Carbon dioxide transport in mammals
b. Fertilizin
c. Organ of corti
d. Teratogenesis
e. Placenta × 5 40)