Download (DBOT 21)

(DBOT 21)
M.Sc. (Final) DEGREE EXAMINATION, JUNE 2010.
Second Year
Botany
Paper V — DEVELOPMENT BIOLOGY OF
ANGIOSPERMS AND ETHNOBOTANY
Time : Three hours
Maximum : 100 marks
SECTION A — (5 × 8 = 40 marks)
Answer any FIVE questions.
Each question carries 8 marks.
1.
Incompatibility.
2.
Endosperm.
3.
Xylem.
4.
Lateral meriting.
5.
Scope of ethnobotany.
6.
Sacred groves in Andhra Pradesh.
7.
Tribal rights.
8.
Scientific evaluation of medicinal plants.
SECTION B — (4 × 15 = 60 marks)
Answer ALL questions.
Each question carries 15 marks.
9.
(a)
Enumerate the salient features of apomixes.
Or
10.
(b)
Explain the development of seed.
(a)
Describe he anomalous secondary growth in
dicots.
Or
11.
(b)
Write a comparative account on the
anatomical features of primary root and stem
of monocot plants.
(a)
Trace the history of traditional medicine in
India.
Or
(b)
Explain the strategies to conserve sacred
groves.
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12.
(a)
Describe the role of photochemicals in
modern medicine.
Or
(b)
Write an essay on ethmobotanical research
in India.
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(DBOT 21)
(DBOT 22)
M.Sc. (Final) DEGREE EXAMINATION, JUNE 2010.
Second Year
Botany
Paper VI — MICROBIOLOGY, MYCOLOGY AND
PLANT DISEASES
Time : Three hours
Maximum : 100 marks
SECTION A — (5 × 8 = 40 marks)
Answer any FIVE questions.
Each question carries 8 marks.
1.
Morphology of bacteria.
2.
Chemoautotrophs.
3.
Status of fungi in the living world.
4.
Asexual reproduction in deuteromycotina.
5.
Passive dispersal of plant pathogens.
6.
Plant disease indexing and forecasting.
7.
Rice tungro disease.
8.
Little leaf of brinjal.
SECTION B — (4 × 15 = 60 marks)
Answer ALL questions.
Each question carries 15 marks.
9.
(a)
Discuss in detail about the Bergey’s system
of bacterial classification.
Or
(b)
Describe the role of microorganisms in the
transformation of nitrogenous compounds.
10.
(a)
Describe the structure and reproduction of
basidiomycotina and compare them with
ascomycotina.
Or
(b)
Discuss the importance of fungi in industry,
medicine and as food.
11.
(a)
Give an account of symptoms caused by
plant pathogenic fungi, bacteria and viruses.
Or
(b)
Explain the role of enzymes in pathogenesis.
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12.
(a)
Give an account on clubroot of crucifers and
blast disease of rice.
Or
(b)
Describe the chemical and biological control
of plant diseases.
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(DBOT 22)
(DBOT 23)
M.Sc. (Final) DEGREE EXAMINATION, JUNE 2010.
Second Year
Botany
Paper VII — CELL BIOLOGY AND MOLECULAR
BIOLOGY
Time : Three hours
Maximum : 100 marks
SECTION A — (5 × 8 = 40 marks)
Answer any FIVE of the following.
All questions carry equal marks.
1.
Endoplasmic reticulum.
2.
Vacuole.
3.
Fluorescent microscope.
4.
Cell signalling.
5.
Conjugation.
6.
Transduction.
7.
DNA repair.
8.
Transcription.
SECTION B — (4 × 15 = 60 marks)
Answer ALL questions.
9.
(a)
Describe the ultra structural organisation of
plasma membrane.
Or
10.
(b)
Explain the structure and functions of
chloroplast.
(a)
Write an essay on genetics of cancer.
Or
11.
(b)
Enumerate
the
salient
transposable elements.
features
(a)
Describe the fine structure of gene.
of
Or
12.
(b)
Trace the steps involved in the evolution of
gene concept.
(a)
Write an elaborate essay on genetic code.
Or
(b)
Explain the
prokaryotes.
regulation
of
gene
in
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(DBOT 23)
(DBOT 24)
M.Sc. (Final) DEGREE EXAMINATION, JUNE 2010.
Second Year
Botany
Paper VIII — PLANT BIOTECHNOLOGY
Time : Three hours
Maximum : 100 marks
SECTION A — (5 × 8 = 40 marks)
Answer any FIVE questions.
Each question carries equal marks.
1.
Androgenic and gynogenic haploids.
2.
Biotic and a biotic stress.
3.
Somatic embryogenesis.
4.
Synseeds.
5.
Cybrids.
6.
Southern blotting.
7.
Ti plasmid.
8.
Restriction endonucleases.
SECTION B — (4 × 15 = 60 marks)
Answer FOUR of the following.
9.
(a)
Describe the in viro methods of haploid
production.
Or
10.
(b)
Discuss the role of phytoharmones in tissue
culture.
(a)
Explain the methods used for the production
of somatic hybrids.
Or
11.
(b)
How
are
cell
suspension
cultures
established? What are their applications?
(a)
Describe the salient features of various types
of vectors used in rDNA technology.
Or
(b)
Distinguish between genomic and cDNA
libraries. Explain the method of cDNA
library preparation.
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12.
(a)
What are molecular markers? With the help
of
suitable
examples,
discuss
their
applications in crop improvement.
Or
(b)
Discuss the role of biotechnology
agriculture and industry.
in
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