Download SGBAU BSc 2019 Summer 2nd Sem Zoology Cell n Developmental Biology Question Paper

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Time : Three Hours] [Maximum Marks : 80

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B.Sc. (Part—I) Semcester—IT Examination

2S- -Z00LOGY

(Cell and Developmental Biology)

Note :— (1) ALL questions arc compulsory.

(2) Question No. 1 carries 8 marks and remaining six questions carry 12 marks each.

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(3) [Mlustrate your answers with suitable diagrams wherever necessary.

1. (A) Fill in the blanks :

(i) The prokaryotic ribosomes are __________

(i) Lysosomes are also called as __________ bags.

(i11) Division of cytoplasm is known as __________

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(iv) Lampbrush chromosomes occurs in __________

(B) Choose correct alternative from the following :

(v) Ingestion of liquid particles by a cell is called as :

(a) Phagocytosis (b) Pinocytosis

(c) Luysis (d) None of the above

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(vi) Who discovered ribosome in animal cells ?

(a) Watson (b) Tatum

(c) Cowdy (d) Palade

(vii) The tip of a chromosome is called :

(a) Mectamere (b) Chromomere

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(¢) Micromere (d) Telomere

(viii) In adult which cell is used as stem cells ?

(a) Bone marrow cells (b) Embrvonic cell

(¢) Muscle cell (d) Nonc of the above

(C) Answer in one sentence

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(ix) What is cell division ?

(x) Who discovered lysosome ?

(xi) What is spermatogenesis ?

(xii) Who discovered Cell ?

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2. (a) Structure of Prokaryotic cell.

(b) Functions of Plasma membrane.

(¢) Structure of Endoplasmic reticulum.

OR

(d) Structure of Eukaryotic cell.

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(e¢) Fluid Mosaic model of plasma membrane.

(f) Functions of endoplasmic reticulum.

3. Describe the following :

(g) Functions of Golgi complex.

(h) Ultrastructure of Ribosome

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(i) Structure of Mitochondria.

OR

(j) Structure of Golgi complex

(k) Functions of Ribosomes

(1) Functions of Lysosomes

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4. Describe the structure and functions of nucleolus.

OR

Describe the structure of lampbrush chromosomes and its significance.

5. Explain the following

(m) Significance of Meiosis

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(n) Spermatogenesis (labelled diagrammatic chart only).

(0) Metaphase of mitosis.

OR

(p) Significance of mitosis

(q) Structure of mature sperm.

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(r) Mechanism of Fertilization

6. Describe the extra embryonic membranes in chick.

OR

Give an account of cleavage and blastulation in frog.

7. Attempt the following :

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(s) Uses of stem cells.

(1) Significance of parthenogenesis.

(u) Choriovitelline placenta.

OR

(v) Types of stem cells

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(w) Functions of placenta.

(x) Type of parthenogenesis

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