M.Sc. (Semester (CBCS) Examination Nov/Dec-2018
Environmental Science
FUNDAMENTALS OF ENVIRONMENT
Time: 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
All questions carry equal marks.
Draw neat and labeled diagrams wherever necessary.
Q.1 Rewrite the sentences by choosing correct answer from given alternatives: 14
The layer of atmosphere containing much of ozone gas is
Thermosphere Stratosphere
Troposphere Mesosphere
Species with limited resources usually exhibit a growth
curve.
Logistic Logical
Experimental Exponential
Species that have many offspring at one time are usually
r-selected K-selected
both and K-selected not selected
A symbiotic relationship where both of the coexisting species benefit from the
interaction is called
Commensalism Parasitism
Mutualism Communism
Earth's includes the crust and the uppermost mantle, which
constitute the hard and rigid outer layer of the earth.
Atmosphere Mesosphere
Lithosphere Ionosphere
Match the following biosphere reserves with respective states of location:-
1. Nokrek i. Assam
2. Simplipal ii. Odisha
3. Cold desert iii. Arunachal Pradesh
4. Dihang Dibang iv. Himachal Pradesh
5. Dibru-Saikhow v. Meghalaya
4-iii, 5-iv 2-iii, 5-i
1-iii, 5-iv 4-iii, 5-i
Consumers are also called
Photoautotrophs Saprotrophs
Heterotrophs Reducers
Conversion of ammonia to nitrite and then nitrate is called
Nitrogen fixation De nitrification
Nitrification Ammonification
Plants can transform the energy in sunlight into organic molecules such as
sugars, in a process called
Photosynthesis Decomposition
Nitrogen fixation Cellular respiration
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SLR-VI-284
10) The plants live in high temperature throughout the year are called as?
Microtherm Megatherm
Mesotherm Hekiskotherm
11) Demography of Belding's ground squirrels was studied by
Sherman and Morton Darwin and Newton
Clement and Tansley Sherman and Clement
12) What is the Greek World for Ecology?
Ethology Oekologic
Hexicology Synecology
13) Which of the ecological Pyramid is always upright?
Pyramid of biomass Pyramid of energy
Pyramid of number All of these
14) is biotic component of ecosystem.
Edaphic factor Living organism
Climatic factors All of these
Q.2 Answer the following (Any
1. Define the Atmosphere.
2. What is autogenic succession and allogenic succession?
3. Define the terms k and r selected species.
4. Define the Liebig's law of minimum.
5. Define the Term life table.
08
Write notes on (Any
1. Lithosphere and its importance
2. Ecotone and ecoedge effect
3. Concept of productivity
06
Q.3 Answer the following (Any
1. Use of ecological process in maintains ecological balance.
2. Explain the Environmental factors?
3. Comments on Environmental Ethics and its dimension
08
Answer the following (Any
1. Illustrate the hydrosphere and its composition.
2. Discuss theories of climax community.
06
Q.4 Answer the following (Any
1. Explain the multidisplinary nature of Environmental Science.
2. Comment on Energy flow in ecosystem.
3. What is community ecology? Explain its characteristics.
10
Answer the following (Any
1. Comment on interspecific and interaspecisfic competition.
2. Comment on biological factors in environment.
04
Q.5 Answer the following (Any Two) 14
What is population ecology? Give concise account of various characteristics of population.
Explain the role of forest in ecosystem?
What is Biosphere? Explain the concept of MAB.