DISTANCE EDUCATION
M.Sc. (Botany) DEGREE EXAMINATION, DECEMBER 2017.
Specialization Plant Biotechnology
PLANT MOLECULAR BIOLOGY
(2008 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
1. Draw and explain the plant mitochondrial genome
structure.
Discuss the importance of chromatin organization in
plant.
Describe in detail about targeting of nucleus
encoded proteins to chloroplast in plants.
2. Describe the structure and functions of nuclear
DNA.
Discuss about plant hormones.
How chromatin organised in plants?
3. Describe the functions of seed storage proteins.
Discuss about plant transposons with an example.

Explain cytoplasmic male sterility.
Sub. Code
15
DE-2973
2
WS 20
4. Explain regulation of gene expression in plants.
Comment on Agrobacterium tumifaciens and Crown
gal tumours.
Describe the detailed mechanism of T DNA
transfer.
5. Short notes on symbolic nitrogen fixation. Give an
example.
Explain co integrate and binary vector.
Short notes on agro infection.
6. Draw the structure of Ti plasmid.
Give a detailed account on plant response to
drought and osmotic stress.
Write short notes on
Silicon Carbide WHISKER.
Ultrasonication.
7. Analyse the sequential stages of gene cloning
techniques.
Give an account of bioremediation through plants.(6)
Describe the development and application of
transgenic plants.
8. Discuss about plant cloning vectors.
What are the stages of plant gene cloning?
Explain briefly with diagrams
Gene tagging.
Genome mapping.
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