Question

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

• A. Long day plant
• B. Darkness neutral plant
• C. Day-neutral plant
• D. Short day plant

Answer 1

The correct option is D Short day plant

Short day plant due to more exposure to day length. Short Day Plants are actually Long Night Plants. A flash of light during the night may 'trick' a plant into responding as though it were a long day. The diagram left shows how a short day plant will only flower of the period of uninterrupted darkness exceeds the critical night length.