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February 7, 2017

World And Indian Geography Test-19-Ecology and Ecosystem

Welcome to your World And Indian Geography Test-19-Ecology and Ecosystem

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1) The largest ecosystem of the Earth is
2) Which of the following is most stable ecosystem?
3) Polar bears are carnivores and prey on many arctic birds and fish. However, under natural conditions, no one found polar bears predating any penguin. This is because
4) The variability among living organisms from all sources including terrestrial, marine and other ecosystems and the ecological complexes of which they are part which includes diversity within species, between species of ecosystems refers to
5) Polar bears are carnivores and prey on many Arctic birds and fishes.-However, under natural conditions, no one found polar bears predating any penguin. This is because
6) Hydrophonics is related to
7) Which one of following is a xerophytic plant?
8) With reference to the food chains in ecosystems, which of the following kinds of organism is/are known as decomposer organism/organisms?
1.Virus
2.Fungi
3.Bacteria
Select the correct answer using the codes given below
9) ’Fixation of nitrogen’ implies
10) We get solar energy from
11) Red Data Book gives information about species which are
12) Phytron is a facility to
13) The minimum area of the land required to completely sustain the life of one person is called his
14) Xerophytes thrive in
15) Abiotic component of our environment
16) In a food chain, the solar energy utilised by plants is only
17) Vermicompost is a/an
18) The cycling of element in an ecosystem is called
19) Van Mahotsav is associated with
20) In the grassland, trees do not replace the grasses as a part of an ecological succession because of
21) As an ecosystem, wetlands are useful for which of the following?
22) Hydrophytes are
23) With reference to food chains in ecosystems, consider the following statements
1.A food chain illustrates the order, in which a chain of organisms feed upon each other.
2.Food chains are found within the population of a species.
3.A food chain’illustrates the numbers of each organism, which are eaten by others.
Which of the statements given above is/are correct?
24) Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?
25) Ozone layer is present mainly in
26) Which one of the following terms describes not only the physical space occupied by organism, but also its functional role in the community of organisms?
27) Crop sown soon after the onset of South-West monsoon in India is called
28) Man can maintain an ecological balance in the biosphere by
29) When we eat the flesh of goat are
30) Which one of the following is a major constituent of biogas? [CDS 2008]

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