Annamalai University 2008-1st Year B.Sc Botany - - - Algae, fungi, virus, lichens and plant diseases - Question Paper

B.Sc. DEGREE EXAMINATION, 2008
(BOTANY)
FIRST YEAR
(PART –III / PAPER-I)
530. ALGAE, FUNGI, VIRUS, LICHENS AND PLANT DISEASES
Dec.) (Time: three Hours
Maximum: 100 Marks

SECTION-A (10×3=30)
ans ALL ques..
every ans should not exceed FIFTY words.
All ques. carry equal marks.

1.Trichome
2.Mannitol
3.Helotism
4.Any 2 algal groups without flagella
5.Hymenium
6.Basidium
7.Gram stain
8.Sex pili
9.Capsomere
10.Sanitation
SECTION-B (8×5=40)
ans ALL ques..
every ans should not exceed 250 words.
All ques. carry equal marks.

11.a) define the ultrastructural of a fungal cell.
(or)
b) define the germination of oospore in Albugo.

12.a) Name the kinds of spores produced in Puccinia.
(or)
b) define monokaryotic and dikaryotic mycelium of Agaricus.
13.a) Write the protocol for bacterial staining.
(or)
b) Classify bacteria based on shape.
14.a) define the role of bacteria in industries.
(or)
b) Write any 5 uses of bacteria to mankind.
15.a) define the external structure and anatomy of thallus of Caulerpa.
(or)
b) define the structure of sex organs in Chara.
16.a) Write any 5 viral on plants and human beings.
(or)
b) define the structure of bacteriophage.
17.a) Comment on the distribution of lichens.
(or)
b) define asexual reproduction in lichens.
18.a) define symptoms and control measures of red rot of sugarcane.
(or)
b) define the different control measures of viral diseases.

SECTION-C (3×10=30)
ans any 3 ques..
every ans should not exceed 500 words.
All ques. carry equal marks.

19.Give an account of life cycle of a sapromycetous fungi that you have learned.
20."Bacteria are our great friends and foes". explain.
21.Discuss the properties of Virus.
22.Describe tikka disease of groundnut laying emphasis on symptoms of the disease and control measures.
23.Describe the structure of thallus and mode of reproduction in Gracilaria.

Earning:   Approval pending.