Which of the following exerts profound effect on the reproductive growth of a flowering plant?

Quality (colour) of light

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Quantity (intensity) of light

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Direction of light

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Duration of light cycle

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Solution

The correct option is D Duration of light cycle
Duration of light has profound effects on the plant. It is termed as photoperiodism. According to the requirement of day light plants have been classified into short day plants, long day plants and neutral plants.

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