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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.
Long Answer Question:
Describe the types of plants on the basis of photoperiod required, with the help of suitable examples.
Describe the mechanism of photoperiodic induction of flowering.
The photoperiod in plants is perceived at ______.
Classify the following plants into Long-Day Plants (LDP), Short Day Plants (SDP) and Day Neutral Plants (DNP) Xanthium, Henbane (Hyoscyamus niger), Spinach, Rice, Strawberry, Bryophyllum, Sunflower, Tomato, Maize.
Light plays an important role in the life of all organisms. Name any three physiological processes in plants which are affected by light.
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.
