HORTICULTURE SCIENCE
PLANT BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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fertilizing the plant with nitrogen.
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treating the plant with gibberellin.
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covering the plant with an opaque cloth in the late afternoon.
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exposing the plant to a brief period of light in the middle of the night.
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Detailed explanation-1: -Gibberellin is the hormone that is majorly found in plants and they help in the blooming of long-day plants. It helps in increasing the length of the stem and internodes.
Detailed explanation-2: -What is a method used to induce short-day plants to flower out of season? Short day plants can be forced to flower by artificially increasing dark time by using blinds or blocking out light during the day.
Detailed explanation-3: -Photoperiodism is the regulation of physiology or development in response to day length. Photoperiodism allows some plant species to flower-switch to reproductive mode-only at certain times of the year.
Detailed explanation-4: -Short-day plants form flowers only when day length is less than about 12 hours. Many spring-and fall-flowering plants are short-day plants, including chrysanthemums, poinsettias and Christmas cactus. If these are exposed to more than 12 hours of light per day, bloom formation does not occur.