NOTE: Attempt FIVE questions in all, including question No. 8 which is COMPULSORY. All questions carry EQUAL marks.

1. Give an account of the following:
(a) Meiosis and its significance. (12)
(b) The role of Nucleic Acid in Protein Synthesis. (8)

2. Write short notes on: (5+5+5+5)
(a) Nucleolus
(b) Lysosome
(c) Chromosomal aberrations.
(d) Gene concept

3. Give in detail the account of functions of various hormones produced by different lobes of Pituitary gland. (20)

4. Discuss in detail the relationship between ontogeny and Phylogeny. (20)

5. Give an account of sources, effects and control of Air Pollution. (20)

6. Give an account of:
(a) Sex-linked inheritance. (12)
(b) Linkage and crossing over. (8)

7. Give short notes on: (5+5+5+5)
(a) Nitrogen cycle
(b) Lateral line system
(c) Respiratory pigments found in America
(d) Erythocytes

8. Write only the correct answer in the Answer Book. Do not reproduce the questions.
(1) Life originated during:
(a) Pre-cambrian period
(b)Mesozoic era
(c) Coenozoic era.
(d) Proterozoic era
(e) None of these

(2) Pancreas secrete:
(a) Pepsin
(b) Only hormones
(c) Only enzymes
(d)Both (a) and (b)
(e) None of these

(3) Louis Pasture is known for:
(a) Germ theory of disease
(b) Germ plasm theory
(c) Mutation theory
(d) Cell theory
(e) None of these

(4) Life originated:
(a) In air
(b) On land
(c) In water
(d) In all (a), (b) and (c)
(e) None of these

(5) Virus are:
(a) Unicellular
(b) Acellular
(c) Multicellular
(d) Free living
(e) None of these

(6) Wings of insects and bats are examples of:
(a) Homologous organs
(b) Analogous organs
(c) Both (a) and (b)
(d) Vestigial organs
(e) None of these

(7) Archeopteryx is a connecting link between:
(a) Amphibians and reptiles
(b) Reptiles and birds
(c) Birds and mammals
(d) Amphibians and birds
(e) None of these

(8) Lamarck’s theory of Evolution is based upon:
(a) Effect of environment
(b) Use and disuse of body parts
(c) Inheritance of Acquired characters
(d) All of these
(e) None of these

(9) Absorption of digested food occurs mainly in:
(a) Colon
(b) Small intestine
(c) Large intestine
(d) Stomach
(e) None of these

(10) A renal portal system is found in:
(a) Man
(b) Horse
(c) Rabbit
(d) Frog
(e) None of these

(11) Tangoreceptors respond to:
(a) Heat
(b) Smell
(c) Chemicals
(d) Touch
(e) None of these

(12) Third ventricle is found in:
(a) Brain of Rabbit
(b) Heart of Rabbit
(c) Kidney of Frog
(d) Heart of Frog
(e) None of these

(13) Blood from glomerulus returns by:
(a) Afferent renal arteriole
(b) Efferent renal arteriole
(c) Both of these
(d) Renal vein
(e) None of these

(14) Vital morphological and Physiological units of Mammalian Kidney are:
(a) Ureters
(b) Seminiferous tubules
(c) Uriniferous tubules
(d) All of these
(e) None of these

(15) Which of the following secretes Oxytocin:
(a) Adrenals
(b) Pituitary
(c) Thyroid
(d) Ovaries
(e) None of these

(16) Longest cells in animals are:
(a) Nerve cells
(b) Egg cells
(c) Kidney cells
(d) Liver cells
(e) None of these

(17) Function of centromere is to:
(a) Initiate cell division
(b) Inhibit cell division
(c) Provide site for cell division
(d) Do all of these
(e) None of these

(18) Which of the following has extranuclear DNA:
(a) Mitochondria
(b) Lysosomes
(c) Golgi complex
(d) All of these
(e) None of these

(19) Who gave laws of segregation and Dominance?
(a) Mendel
(b) Morgan
(c) Darwin
(d) Muller
(e) None of these

(20) Adrenal glands are found in close association with:
(a) Testes
(b) Spleen
(c) Liver
(d) Ovaries
(e) None of these

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