M.Sc. (Semester (CBCS) Examination Oct/Nov-2017
Botany
PLANT ECOLOGY
Day Date: Tuesday, 21-11-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions: Attempt totally five questions.
Section-I is compulsory.
Attempt any two questions from Section II and any two questions from
Section III.
Figures to the right indicate full marks.
Section I
Q.1 Rewrite the following sentences by choosing correct alternative: 14
Mangroves are growing in ecosystem.
Riverine Estuarine
Scrub jungles Grassland
Assemblage of plants in a habitat is called
Biological community Animal community
Plant community Forest community
The water found in wetlands can be
Freshwater Brackish
Saltwater All of these
Wetlands occur naturally on every continent except
Antarctica Africa
Asia Australia
The gradual replacement of one type of plant community by other is known
as
Ecology Succession
Migration Esesis
Environmental impact assessment start in the
1960 1982
1950 2002
are areas of terrestrial and coastal ecosystem promoting solutions
to reconcile the conservation of biodiversity with its sustainable use.
Wetland Biosphere reserves
Sacred grooves Tropical forests
The scanning of the earth by satellite or high-flying aircraft in order to obtain
information about it is known as
Remote sensing Remote scanning
Photography Weather forecast
The Indian government has established biosphere Reserves in India.
15 16
10 18
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SLR-MD-125
10) reduces the oxygen carrying capacity of blood.
CO Co2
NH3 Mn
11) Green house effect is caused by
O2 CO2
CFC N2
12) The term 'ecosystem' was coined by British ecologist
A. G. Tansely P. D. Sharma
O. P. Odum T. N. Soo
13) In ecosystem energy flow is
Scattered Unidirectional
Upright Inverted
14) Primary consumers are
Herbivores Omnivores
Carnivores Bacteria
Section II
Q.2 Comments up on biotic component of any ecosystem studied by you. 07
What is remote sensing? Enlist its applications in vegetation analysis and
wild life management.
07
Q.3 What is air pollution? Comment up its effect on vegetation. 07
Explain the process of plant succession. 07
Q.4 Explain in detail 'aquatic ecosystem'. 07
Write an essay on 'environmental toxicology' studies by you. 07
Section III
Q.5 What is climatic climax? 05
Explain 'carbon credit'. 05
Biotransformation of toxicants. 04
Q.6 Explain in brief phytoremediation. 05
IUCN. 05
Ozone depletion. 04
Q.7 Writes note on any three 14
EIA.
Phytostabilization .
MAB.
Xenobiotics.