Master of Science I (Botany) Examination: Oct Nov 2016
Semester I (New CBCS)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SM
125
Monday
21/11/2016
10:30 AM
to
01:00 PM
Plant Ecolgoy
C
HCT
1.3
Instructions: Attempt totally five questions.
Q.1 is compulsory (Section
Attempt any two questions from question no. 2 to 4 (Section II)
Attempt any two questions from question no. 5 to 7 (Section
III)
Figures to the right indicate full marks.
Total Marks: 70
SECTION 1
Q.1 Choose the correct answer from options given below. 14
Green house effect is caused by
O2 CO2
CFC N2
The water found in wetlands by
freshwater brackish
saltwater all of these
Wetlands occur naturally on every continent except
Asia Africa
Antarctica Australia
are areas of terrestrial and coastal ecosystems promoting
solutions to reconcile the conservation of biodiversity with its sustainable
use.
Westland Biosphere reserves
Sacred grooves Tropical forests
The Indian government has established Reserves in India.
15 16
10 18
An is a community of living organisms in conjunction with
the nonliving components of their environment.
succession ecosystem
biosphere forest
In ecology, succession is the succession which driven by the
abiotic components of an ecosystem.
Allogenic Heterogenic
Autogenic Homogenic
IUCN was established in
1945 1951
1948 1940
Page 1 of 2
Biosphere reserves are areas comprising ecosystems.
Terrestrial Marine
Coastal All of these
10)MAB aims to establish a scientific basis for the improvement of
relationships between
People and their
environments
Wetlands and their environments
Ecosystem and their
environments
Forest and their environments
11) The emission of ODS account for roughly, of total
depletion of ozone layer in stratosphere.
80% 90%
95% 72
12) are expelled from high temperature combustion, and are also
produced during thunderstorms by electric discharge.
Sulfur oxide Nitrogen oxide
Volatile organic compounds Carbon monoxide
13) is the increase of Earth's average surface temperature due to
effect greenhouse gases.
Global Warming Thunder storms
Global cooling Global freezing
14) is a form of phytoremediation that involves filtering water
through a mass of roots to remove toxic substances or excess nutrients.
Phytoextraction Rhizofiltration
Phytostabilization Phytovolatization
SECTION II
Q.2 What are the wetlands? Explain characteristic features of wetlands. 07
Explain in detail marine water ecosystem. 07
Q.3 Explain consequences of climate change studied by you. 07
Comment up on green house effect. 07
Q.4 What is water pollution? Comment up its effect on biodiversity. 07
Write an essay on 'environmental toxicology' studied by you. 07
SECTION III
Q.5 What are the structural components of ecosystem? 05
Environmental awareness programmes. 05
Bioaccumulation of pollutants. 04
Q.6 Biosphere reserves. 05
Phytostabilization. 05
Explain in brief Bioremediation. 04
Q.7 Write notes on any three. 14
Ramasar conservation.
Autogenic succession.
EIA
Global warming.