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One set of plants exposed to 12 hr day and 12 hr night flowered. The other set with similar exposure to day-night period but with dark period interrupted by flash of light did not come to flower. The plant is
One set of plants exposed to 12 hr day and 12 hr night flowered. The other set with similar exposure to day-night period but with dark period interrupted by flash of light did not come to flower. The plant is
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Solution
The correct option is D Short day
Short day plants are those plants that begin flowering when the days are shorter than their critical day length. They require long period of darkness and short period of light to flower. Long day plants are those plants that begin flowering when the days are longer than their critical day length. They will flower when they are exposed to short period of darkness and long period of light. Long day plants flower in summer and short day plants flower in spring. Thus, the correct answer is option D.
Short day plants are those plants that begin flowering when the days are shorter than their critical day length. They require long period of darkness and short period of light to flower. Long day plants are those plants that begin flowering when the days are longer than their critical day length. They will flower when they are exposed to short period of darkness and long period of light. Long day plants flower in summer and short day plants flower in spring.
Thus, the correct answer is option D.
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