BIOLOGY
HORMONES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Plants that flower when exposed to less than 10-12 hours of darkness.
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plants that require 12 or more hours of darkness for seeding to begin.
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Plants that flower when they reach maturity.
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There is no such thing as a long-day plant.
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Detailed explanation-1: -These are termed “long-day” plants. These bloom only when they receive more than 12 hours of light. Many of our summer-blooming flowers and garden vegetables are long-day plants, such as asters, coneflowers, California poppies, lettuce, spinach and potatoes.
Detailed explanation-2: -Green grams, marijuana, cotton, soyabean, jowar and rice are examples of short day plants. Wheat, henbane, carnation, lettuce, barley and oats are the example of long day plants.
Detailed explanation-3: -Long Day Plants: They require the periodic exposure of light exceeding the critical period to induce flowering. Short Day Plants: They require the periodic exposure of light less than the critical period to induce flowering. Day-neutral Plants: The flowering in many plants does not depend on the photoperiod.
Detailed explanation-4: -*Short day plants : Rice, Chrysanthemum, Cotton, Tobacco, Poinsettias, Soyabeans etc. *Long day plants : Spinach, Radish, Lettuce, Sugar beet etc. *Day-neutral plants : Tomatoes, Sunflower, Pea plants, Common bean, Maize Dandelions etc.