PLANTS
PLANT RESPONSES TO STIMULI
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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carnation
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poinsettia
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rose
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None of these are correct.
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Detailed explanation-1: -Carnations are long day plants and require high light levels to produce high quality flowers.
Detailed explanation-2: -The Carnation is a facultative long day plant, which means that they form the flower faster during long days than in short days. Carnations require high levels to produce high quality flowers.
Detailed explanation-3: -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-4: -Day-neutral plants: Examples are Tuberose, Carnation, Dianthus, Pinks, and African violets. These are known to be photo-insensitive plants having no specific light or dark requirements.
Detailed explanation-5: -Examples of long day plants are spinach, lettuce, radish, sugar beet etc. Thus, the correct answer is ‘Spinacia oleracea (Spinach). ‘