Banaras Hindu University (BHU) 2007 B.Sc Botany .part 3 - Question Paper
Thursday, 17 January 2013 04:10Web
botany
full marks 75 hours three
1 .give the comparative account of r and k opted life history strategies.[marks 15]
2. describe the plant community. explain different concept related to plant community. [marks 15]
3. what is plant succession ? provide an account of different models explaining of plant succession..[marks 15]
4.enumerate the sources and types of air pollution define the effect of major air pollution on plants.[marks 15]
part b
5. write descriptive notes on any 2 of the subsequent .[marks seven 1/2]
(a)ecological niche
(b)effect of climax
(c) trend of species diversity
6.write descriptive notes on any 2 of the subsequent .[marks seven 1/2]
(a)cause and consequences of eutrophication
(b)soil pollution and its impact on plants
(c) factor influencing toxicity
7.write descriptive notes on any 2 of the subsequent .[marks seven 1/2]
(a)dose response relationship
(b)analytic character of plant community
(b)measurement of primary productivity in terrestrial ecosystem
8.write descriptive notes on any 2 of the subsequent .[marks seven 1/2]
(a)autogenic and allogenic succession
(b) grazing and detritous food web
(c) J and S shaped population growth curve
9. short ans in one or two phrases [marks 10* 11/2]
(a)biological magnification
(b)LD50
(c)aerosol
(d)toxicants
(e)acid rain
(f) random sampling
(g)community net productivity
(h) natality
(i)synthetic community character
(j)chrono sequences succession
Earning: Approval pending. |