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Question
Four potted plants (I, II, Ill, and IV) of a short day plant, which has the critical period of 14 hours; are taken and exposed to light for different time periods. The light periods given are listed in the table.
Potted plant Photoperiod I 10 hrs II 15 hrs III 16 hrs IV 20 hrs
Which potted plant will show flowering after exposure to light?
Four potted plants (I, II, Ill, and IV) of a short day plant, which has the critical period of 14 hours; are taken and exposed to light for different time periods. The light periods given are listed in the table.
| Potted plant | Photoperiod |
| I | 10 hrs |
| II | 15 hrs |
| III | 16 hrs |
| IV | 20 hrs |
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Solution
The correct option is A I
A short day plant (SDP), which has a critical period of 14 hours, will flower only if it is provided a continuous period of darkness of 14 hours; which has been given to the potted plant-I only. In rest of the potted plants, more amounts of light periods are being given and thus the dark periods have been reduced to below 14 hours.
A short day plant (SDP), which has a critical period of 14 hours, will flower only if it is provided a continuous period of darkness of 14 hours; which has been given to the potted plant-I only. In rest of the potted plants, more amounts of light periods are being given and thus the dark periods have been reduced to below 14 hours.
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