FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Today scientists know that photoperiodicity in plants depends primarily on
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hours of darkness.
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intensity of light.
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degree of temperature.
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amount of phytochromes.
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Explanation:
Detailed explanation-1: -Phototropism, plant growth towards or away from light, and photoperiodism, regulation of flowering and other developmental transitions by day/night length.
Detailed explanation-2: -Photoperiodic reactions can be reasonably predicted, but temperature, nutrition, and other environmental factors also modify an organism’s response. In animals, the regular activities of migration, reproduction, and the changing of coats or plumage can be induced out of season by artificially altering daylight.
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