SECTION A
1 Briefly describe the following in not more than 150 words
each :
(a)Role o f microbes in soil nutrient cycling
(b)Algae as bioindicators
(c)Concept of Progymnosperms
(d)Chemical nature o f viroids and their transmission in
plants
(e)Evolution o f sexual, reproduction in fungi
2(a) Describe the range of vegetative structures with
suitable diagrams in volvocales and their phylogenetic relationships?
2(b) Describe the disease symptoms, causal organism and the
control measures o f the loose smut of wheat.
2(c) Draw well labelled diagram of the L.S. o f Anthoceros
sporophyte. Discuss the evolutionary significance o f Anthoceros also.
3(a) Draw well labelled diagram of the T.S. o f Teleutosorus
o f Puccinia and give a brief description of the same.
3(b) Describe the symptoms, causal organism and the control
measures of white rust of crucifers.
3(c) Discuss the distribution of
living Gymnosperms in India and their economic importance.
4(a) Give the name o f the causal
organism, disease symptoms and disease control measures of the following :
Red rot o f sugarcane and Late
blight o f potato.
4(b) Give an account o f sexual
fruiting bodies in Ascomycetes.
4(c) Describe the method o f
vegetative reproduction in Bryophytes.
SECTION B
5. Describe the following in about
150 words -each;
5.(a)Mycotoxins
5.(b)Concept of totipotency in
higher plants
5.(c)Dye yielding plants
5.(d)Ethnobotanical knowledge and
beliefs in species conservation
5.(e)Use of somaclonal variations
in crop improvement
6.(a) Write an account of the
following families with respect to floral structures. Give the botanical names
o f three important plant species belonging to each o f the families and
specify their' uses : Ranunculaceae and Fabaceae.
6.(b) Discuss the components o f a
full-fledged Botanical garden.
6.(c) Give an account o f
micropropagation and its utility towards ex-situ conservation o f rare and
endangered plants.
7.(a) Describe the oil yielding plants o f India and their
economic importance.
7.(b) Distinguish the Androecium of Malvaceae, Asteraceae
and Asclepiadaceae from each other.
7.(c) “Somatic hybrids can be characterized by a variety of
methods.” Substantiate the above statement.
7.(d) Compare the floral characters o f the family
Solanaceae and Malvaceae.
8.(a) Give an account of Vavilov’s “Centres o f Origin” of
the cultivated plants.
8.(b) Describe the method of production of Androgenic
haploids.
8.(c) Describe the anomalous secondary growth in monocots
with suitable diagram.
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