Viruses, Prokaryotes & Algae- Botany-BSC-Nagpur-Summer-2019 - Grad Plus

Viruses, Prokaryotes & Algae- Botany-BSC-Nagpur-Summer-2019

Bachelor of Science (B.Sc.) Semester—1 Examination
BOTANY (Viruses, Prokaryotes & Algae)

Optional Paper—1
Time : 3 Hours
Maximum Marks : 50

N.B. :— (1) All questions are compulsory and carry equal marks.
(2) Draw well labelled diagram wherever necessary.


1. Write on :

(a) Nature of viruses [5M]

(b) Lylic cycle in T4-bacteriophage [5M]

OR

Write short notes on :

(c) Ultra structure of T.M.V. (Diagram only) [2½M]

(d) Reproduction in Mycoplasma [2½M]

(e) Economic importance of viruses [2½M]

(f) Structure of T4-bacteriophage [2½M]

2. Write on :

(a) Ultra structure of Cyanobacterial cell  [5M]

(b) Reproduction in Bacteria. [5M]

OR

Write short notes on :

(c) Economic importance of cyanobacteria[2½M]

(d) Ultrastructure of Bacterial cell (Diagram only)[2½M]

(e) Thallus structure of Nostoc [2½M]

(f) Flagella in Bacteria [2½M]

3. Write on :

(a) Sexual reproduction in nannadrous species of Oedogonium [5M]

(b) Classification of Algae (Fritsch, 1954) [5M]

OR

Write short notes on :

(c) General characteristics of algae [2½M]

(d) Thallus of Chara [2½M]

(e) L-S Globule of chara (Diagram only) [2½M]

(f) Cell structure of Oedogonium [2½M]

4. Write on :

(a) Sexual reproduction in Ectocarpus [5M]

(b) Asexual reproduction in vaucheria [5M]

OR

Write short notes on :

(c) Plurilocular sporangia [2½M]

(d) Useful aspects of Algae [2½M]

(e) Sex organs in Vaucheria (Diagrams only) [2½M]

(f) Thallus of Vaucheria [2½M]

5. Write in TWO/THREE lines only. Diagrams are not necessary (any TEN) :

(a) Capsid

(b) Lysogenic cycle

(c) PPLO

(d) Akinetes

(e) Sex pili

(f) Polar nodules

(g) Cab cells

(h) Amylum star

(i) Nucule

(j) Oogamy

(k) Wanderplasm

(l) Carageenan    [10M]

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