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Question
What is short day plant? Give any two examples.
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Solution
1. Critical photoperiod is the length of photoperiod above or below which flowering occurs. Short Day Plants usually flower during winter and late summer when day length is shorter than the critical photoperiod.
2. These are called long night plants because they require long uninterrupted dark period/ night for flowering.
3. If the dark period is interrupted even by a flash of light, SDP will not flower.
4. Some of the short-day plants are Dahlia, Tobacco, Chrysanthemum, Soybean (Glycine max), Cocklebur (Xanthium), cotton, etc.
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Long Answer Question:
Describe the types of plants on the basis of photoperiod required, with the help of suitable examples.
The site of perception of light in plants during photoperiodism is ______
The photoperiod in plants is perceived at ______.
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- Phytochrome pigment exists in two forms.
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- During day time Pr form accumulates in plants.
While studying flowering behaviour in ______ and ______ plant, Garner and Allard discovered photoperiodism.
