Ecology at the organismic level is essentially:
1. Physiological ecology
2. Biochemical ecology
3. Anatomical ecology
4. Pathological ecology

Subtopic:  Introduction to Ecology | Introduction to the Chapter |
 79%
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): In every species, there are trade-offs between survival and reproductive traits.
Reason (R): Life history traits are products of natural selection.
In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2.  Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.  (A) is true but (R) is false.
4.  Both (A) and (R) are false.

Subtopic:  Introduction to the Chapter |
 54%
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Biosphere is:

1.  A component in the ecosystem
2.  Composed of the plants present in the soil
3.  Life in the outer space
4.  Composed of all living organisms present on earth which interact with the physical environment
Subtopic:  Introduction to Ecology | Introduction to the Chapter |
 90%
From NCERT
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NEET 2025 - Target Batch
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