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[QUOTE=hemalathaijt;191829][B]KAKATIYA UNIVERSITY
B.Sc III Year
Botany- Paper III
(Cell Biology, Genetics, Ecology and Biodiversity)
Model question paper – Theory[/B]
[B]Time[/B] :  3 hours                                             [B]Max. Marks[/B] :  100

[URL]http://www.kuwarangal.com/default.aspx[/URL]
[URL]http://www.kuwarangal.com/Uploads/OnlineForms/B.Sc._III&IV_Paper_Question_bank-Botany.doc[/URL]

SECTION – A
Define or explain  ALL of the following    (8x2 =16 Marks)

1. Nucleotide
2. Heterochromatin
3. Law of seggregation
4. Aneupolid
5. Food chain
6. Hydrosere
7. UNEP
8. Hot spot

SECTION – B
Write short answers for ALL of the following (4 x 6 = 24 Marks)

9. (a) Cell cycle
(OR)
(b) Lambrush chromosome

10. (a) Epistasis
(OR)
(b) Transition

11. (a) Ecosystem
(OR)
(b) Ecad

12. (a) Red data book
(OR)
(b) Endemism

SECTION – C
Write detailed answers for ALL of the following        (4 x 15 = 60 Marks)
13. (a) Describe replication of DNA
(OR)
b) Describe different stages in mitosis

14.  (a) What are molecular basis of mutations
(OR)
(b) Write the structure of pBR - 322 plasmid

15.  (a) Discuss the energy flow in ecosystem
(OR)
(b) What are biogeochemical cycles? Explain N2 cycle.

16. (a) Discuss the principle of conservation.
(OR)
(b) Explain the role of NBPGR in the conservation of biodiversity.[/QUOTE]

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