Botany
Paper


1. Answer any three of the following in not more than 250 words each: 20x3=60
a. DiscussEconomicimportance of cyanobacteria
b. Explain significance ofMicrobiology in Agriculture
c. Describe structure of a Bacteriophage
d. Write a brief note on Fungaltoxins
e. Define a Plasmid. Describe its role in 'gene transfer' with the help of an example

2. Distinguish between the following: 12x5=60
a. Algae and Fungi
b. Obligate and Facultative parasite
c. Pbycomycetes,mdAscomycetes
d. Bacteria and Cyanobacteria
e. MycoplasmaandVirus


3. Answer the following: 15x4=60

a. Give an illustrated account of types of prothallus (gametophytes) in Lycopodium b. Describe the Stelar system in Pteridophyte with the help of diagrams c. Under any recognised scheme of classification classify Gymnosperms.Add a note on their distribution d. Describe any two fossil Gymnosperms 4. Write critical notes on the following: a. Elators and.their role b. Vegetative propogation in BRYOPHYTES c. Sporophyte ofAnthoceros d. Heterospory and its significance e. Special features of sporophyte of Marchantia. Draw neat, labelled diagram


SECTION-B
5. Answer any three the following in not more than 250 words each: 20x3=60

a. Give major differences between C3 C4 plants
b. Describe anamolous secondary growth in Discounts with the help of two
examples
c. What is an Embryo-Sac? Describe different types ofEmbryo-Sacs
d. Write note on development ofEndosperm and its function
e. Give Characteristic features of family Asclepiadaceae

6. Answer the following questions: 15 x4=60
a. Write a brief note on Ethnobotany and its role in human welfare
b. Give merits and demerits ofHutchinson's Systems of classification
2

c.
What do you understand by a Herbarium? Write a note on Indian Herbaria

d.
Write the names ofatleasttenBotanicalgardens of the world with at least five from India


7. Write explanatory notes on the following:
a.
Justify the statement "Bacteria are our friends as well as foes"

b.
Describe lytic and lysogenic cycle of viral infection

c.
Differentiate betweenProkaryotes andEukaryotes

d.
Describe any two plant diseases caused by fungal pathogens

e.
How transformation and transduction differ from each other


8. Write the correct botanical name and the family to which it belongs, and the parts used for each of the following:
a. Tulsi
b. Neem
c. Ashwagandba
d. Gwarpatha
e. Aanwla f Garlic
g. Ginger
h. Turmeric
1. Rose
J. Cotton