Banaras Hindu University (BHU) 2006 B.Sc Botany (hons)part 3 - Question Paper
Thursday, 17 January 2013 04:35Web
botany
microbiology and plant pahtology
time three hours full marks 75
ans five ques. every from part -A and part ,B part ,-C is compulsory all ques. carry equal marks sections_A
1_ what do u know about symbiotic nitrogen fixation? write in brief the special features diazotrophs [marks 15]
2. write short notes on any 2 of the following; [marks 7.5*2]
(a) agrobacterium
(b)secondary metabolite
(c) halobacterium
3 . write brief account of any tow of the following;[marks 7.5*2]
(a)LPP1
(b)thermoplasma
(c)retrovirus
4.write a short account on different methods of microorganisms [marks 15]
part -B
5 .describe five mile stone in the development of the plant pathology and is scope. [ marks 7.5*2]
6. write brief notes on any 2 of the following; [ marks 7.5*2]
(a) blast in rice
(b)little leaf in brinjal
(c) PR protiens
7.write a short account on any 2 of the following[ marks 7.5*2]
(a) parasitism
(b) pathogenesis
(c)integrated disease management.
8. write a brief account of the important symptoms of the fungal disease and their control.[marks 15]
part c
9'attempt the following_ [marks 1.5*10]
(a) provide an example of phyto alexin_
(b)downy mildew of crucifers is caused by_
(c)wilt disease of tomato is caused by_
(d)nitrogen fixation is carried out by the enzyme_
(e)Trichoderma harizianum is an important biological fungal agent (true/false)
(f)fusaric acid is non specific vivotoxin (true/false)
(g)annual recurrence of wheat rust in Indo-Gangatic plain was discovered by_
(h)name any non scontaining amino acid
(i)write the name of any two growth inhibitory hormones
(j) provide an example of actual 1 substrate enzyme
Earning: Approval pending. |