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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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RELATED QUESTIONS
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.
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 site of perception of light in plants during photoperiodism is ______
______ of a vegetative plants are the sites of photoperiodic perception.
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.
What are long-day plants (LDP)? Give two examples.
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.
