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प्रश्न
What are long-day plants (LDP)? Give two examples.
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उत्तर
- Plants that flower usually during summer are called long-day plants. They require a longer duration of light than the critical photoperiod, for flowering.
- They are called short-night plants as they require a short dark period.
- When the long dark period is interrupted by a brief flash of light, LD plants can flower e.g. pea, radish, sugar beat,
- Example: cabbage, spinach, wheat, poppy, etc.
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संबंधित प्रश्न
Which of the following is not a photosynthetic pigment?
Both a short day plant and a long day plant can flower simultaneously in a given place. Explain.
Define photoperiodism.
Which one of the following is NOT an example of long day plants?
In short-day plants (SDP), flowering is induced by ______.
______ of a vegetative plants are the sites of photoperiodic perception.
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.
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.
