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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) Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?
2) The cycling of element in an ecosystem is called
3) ’Fixation of nitrogen’ implies
4) Hydrophytes are
5) The largest ecosystem of the Earth is
6) The minimum area of the land required to completely sustain the life of one person is called his
7) Phytron is a facility to
8) Which one of following is a xerophytic plant?
9) Hydrophonics is related to
10) Crop sown soon after the onset of South-West monsoon in India is called
11) When we eat the flesh of goat are
12) Abiotic component of our environment
13) 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
14) Ozone layer is present mainly in
15) Vermicompost is a/an
16) Red Data Book gives information about species which are
17) Which one of the following is a major constituent of biogas? [CDS 2008]
18) 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
19) Man can maintain an ecological balance in the biosphere by
20) Xerophytes thrive in
21) 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?
22) In the grassland, trees do not replace the grasses as a part of an ecological succession because of
23) 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
24) As an ecosystem, wetlands are useful for which of the following?
25) 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
26) In a food chain, the solar energy utilised by plants is only
27) Van Mahotsav is associated with
28) Which of the following is most stable ecosystem?
29) We get solar energy from
30) 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?

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