Biology CLEP Prep Practice Exam

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Prepare for the Biology CLEP Test with comprehensive flashcards and multiple choice questions. Each question comes with explanations and hints to ensure a full understanding. Boost your exam readiness today!

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How does the process of transpiration help cool leaves?

  1. By evaporating water faster than it can be replaced

  2. By reflecting sunlight

  3. By releasing heat energy

  4. By attracting clouds

The correct answer is: By evaporating water faster than it can be replaced

Transpiration is the process of water being evaporated from a plant's leaves. This helps to cool down the leaves because as water vaporizes, it takes away heat from the surrounding area. This is similar to how sweating helps cool down humans. Option B, reflecting sunlight, would actually contribute to heat being absorbed by the leaves. Option C, releasing heat energy, would not actively reduce the temperature of the leaves. Option D, attracting clouds, has no direct effect on the temperature of the leaves. Therefore, the most accurate answer is A.

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