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प्रश्न
Define photoperiodism.
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उत्तर
The response of plants to the relative length of light and dark periods with reference to the initiation of flowering is called photoperiodism.
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संबंधित प्रश्न
What do you understand by photoperiodism and vernalisation? Describe their significance
Both a short day plant and a long day plant can flower simultaneously in a given place. Explain.
What is short day plant? Give any two examples.
In short-day plants (SDP), flowering is induced by ______.
The photoperiod in plants is perceived at ______.
Light plays an important role in the life of all organisms. Name any three physiological processes in plants which are affected by light.
Nicotiana tabacum, a Short Day Plant, when exposed to more than critical period of light fails to flower. Explain.
Fill in the blanks:
Pigment involved in Photoperception in flowering plants is ______.
How many statements are correct for phytochromes?
- Phytochrome pigment exists in two forms.
- Two forms of phytochrome are interconvertible.
- Pfr form of phytochrome inhibits flowering in SDP, during day time.
- Pfr form of phytochrome inhibits flowering in LDP, during day time.
- During day time Pr form accumulates in plants.
While studying flowering behaviour in ______ and ______ plant, Garner and Allard discovered photoperiodism.
