- 1(current)
Q. No.Physical structure of an ecosystem:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | is same for all types of ecosystems. |
| II: | is the result of interaction of biotic and abiotic components. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Introduction | ECOSYSTEM – STRUCTURE AND FUNCTION |
66%
From NCERT
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The functions of any ecosystem and of the biosphere as a whole include:
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
| I: | conversion of inorganic into organic material, with the help of the radiant energy of the sun, by the autotrophs |
| II: | consumption of the autotrophs by heterotrophs; |
| III: | decomposition and mineralization of the dead matter to release them back for reuse by the autotrophs. |
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: ECOSYSTEM – STRUCTURE AND FUNCTION |
83%
From NCERT
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What is the fate of the vast majority of energy entering into an ecosystem?
1. it gets converted into biomass by plants.
2. it gets utilized by secondary consumers.
3. it is lost as heat.
4. it gets used by the primary consumers.
1. it gets converted into biomass by plants.
2. it gets utilized by secondary consumers.
3. it is lost as heat.
4. it gets used by the primary consumers.
Subtopic: ECOSYSTEM – STRUCTURE AND FUNCTION |
70%
From NCERT
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A community of organisms and their physical environment interacting together form a/an:
1. Population
2. Ecosystem
3. Biome
4. Biosphere
1. Population
2. Ecosystem
3. Biome
4. Biosphere
Subtopic: ECOSYSTEM – STRUCTURE AND FUNCTION |
84%
From NCERT
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The second vertical strata in an ecosystem is usually occupied by:
1. herbivores
2. trees
3. shrubs
4. grasses
1. herbivores
2. trees
3. shrubs
4. grasses
Subtopic: ECOSYSTEM – STRUCTURE AND FUNCTION |
73%
From NCERT
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