Single Choice

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?

AI
Correct Answer
BII
CIII
DIV

Solution

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.

SIMILAR QUESTIONS

Reproduction and Growth in Plants

Both a short day plant and a long day plant can produce flower simultaneously in a given place. Explain.

Reproduction and Growth in Plants

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.

Reproduction and Growth in Plants

One set of a plant was grown at 12 hours a day and 12 hours a night period cycles and it flowered. While in the other set, night phase was interrupted by flash of light and it did not flower. Under which one of the following categories will you place this plant?

Reproduction and Growth in Plants

Importance of day length in flowering of plants was first shown in

Reproduction and Growth in Plants

Write three differences between short day and long day plants.

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