Master of Science I (Environmental Sci.)Examination: Oct 2016
Semester I (New CBCS)
SLR No. Day
Date Time Subject Name Paper No. Seat No.
SLR SF
405
Wednesday
16/11/2016
10.30 AM
to
01.00 PM
Fundamentals of
Environment
C
HCT 1.1
Instructions: Answer any five questions.
All questions carry equal marks.
Q.1 is compulsory.
Attempt any two from Q.2, 3 4
Attempt any two from Q.5, 6 7
Total Marks:70
Q.1 Select the answer among the following: 14
Environmental science is defined as a branch of science focused on the study
of the relationship or interactions in between and
natural world and organisms and their environments
characteristics of organisms and atmosphere
animals and human behaviour
human existence and natural world
every year is observed as World Environment Day to emphasize
the importance of green environment in our lives and promote the worldwide
awareness of the environment.
6th June 5th June
23rd March 5th July
that organisms interact with their inorganic
surroundings on Earth to from a synergistic self-regulating, complex system
that helps to maintain and perpetuate the conditions for life on the planet.
Darwinian process Leopold Matrix
Gaia hypothesis Gaussian Hypothesis
In the earth atmosphere, the lowest layer is the which extends
from the surface to the bottom of the stratosphere.
mesosphere biosphere
troposphere thermosphere
The continuous process in which one state of water transferred to another
state is called
water cycle nitrogen cycle
geological cycle Iithological cycle
The atmosphere becomes increase in altitude.
stronger thinner
weaker shorter
In biosphere as a protective layer which protects life on earth
and remaining factors of biosphere.
hydrosphere lithosphere
atmosphere exosphere
Which is not a greenhouse gas among the following
H2S CFC
CH4 CO2
Which of following statement is incorrect about the Biosphere?
Biosphere is combination of lithosphere, hydrosphere and atmosphere
Biosphere is missing at extreme of north and south pole
Organisms are uniformly present in Biosphere
All of the above
10) Average content of silica in soil is
24% 31%
27% 35%
11) The carrying capacity of a population is determined by its
Population growth rate Natality
Mortality Limiting resources
12) Exponential growth occurs when there is
a great environmental resistance no biotic potential
no environmental resistance a fix carrying capacity
13) In pond ecosystem the pyramid of biomass is
upright spindle shaped
inverted none of these
14) Which of the following interaction will not promote co-evolution?
commensalism parasitism
mutualism interspecific competition
Q.2 What is the meaning of predation in ecosystem; explain its types and its role in
ecology? Discuss the adaptations and behaviour of predator?
14
Q.3 Discuss why environmental sciences are called multidisciplinary science. Explain
the need of natural resource conservation with suitable example.
14
Q.4 What is UV radiation? Explain its harmful effects on Earth's environment? How
Stratospheric O3 acts as a protective layer from the harmful UV radiations coming
towards Earth?
14
Q.5 Write a short note on the following: 14
Nitrogen Cycle
Population Ecology
Q.6 Write a brief with suitable illustration on the following: 14
Bioaccumulation and Bio magnification
Food Chain and Food Web
Q.7 Write an account on the following: 14
Structure and composition of Lithosphere
Gaia Hypothesis