Read the following statements.
Statement I: Ability to maintain a constant internal environment decreases the overall fitness of species.
Statement II: Plants have mechanisms to maintain a constant internal temperature.
In the light of above statements, choose the correct answer from the options given below.

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Both statements I and II are correct and II explains I

Both statements I and II are correct and II does not explain I

Statement I is true and statement II is false

Both statements I and II are false

answer is D.

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Detailed Solution

Many species evolved a relatively constant internal (within the body) environment to permit all biochemical reactions and physiological functions to proceed with maximal efficiency. This enhanced the overall ‘fitness’ of the species. Thus, the ability to maintain a constant internal environment increases the overall fitness of species.
Plants do not have mechanisms to maintain a constant internal temperature.

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