ENDOCRINE SYSTEM
ENDOCRINE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a burst of red light in the middle of the night
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a burst of far-red light in the middle of the night
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a day that is longer than a certain length
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a night that is longer than a certain length
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Detailed explanation-1: -Short day plants require light below the critical photoperiod to induce flowering. They usually flower during the seasons when the days are of short duration, such as during the summer or fall. A continuous period of darkness is necessary for flowering in the short day plants.
Detailed explanation-2: -Short-day plants need long and continuous periods of darkness in order to flower (more than 12 hours). They usually bloom in the spring or fall.
Detailed explanation-3: -Short day plants are also called long night plants because these plants require short days but long nights to be able to flower properly. The nights must be long and uninterrupted for them to flower. Such a dependency on the length of the day is called photoperiodism.
Detailed explanation-4: -Short Day Plants only flower when the photoperiod is less than the critical day length. However, it has actually been discovered that it’s the night length, not the day length that controls flowering. The period of uninterrupted darkness (critical night length) is what actually controls flowering.