On hot dry days guard cells often close microscopic openings in plant leaves conserving water. This is an example of A. Environmental factors causing gene mutation in plants B. Finite resources acting

On hot dry days guard cells often close microscopic openings in plant leaves conserving water. This is an example of

A. Environmental factors causing gene mutation in plants
B. Finite resources acting as selecting agents for evolution
C. A feedback mechanism for maintaining homeostasis
D. Differentiation in plants as a result of stimuli

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On hot dry days guard cells often close microscopic openings in plant leaves conserving water. This is an example of A. Environmental factors causing gene mutation in plants B. …

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