Plant Growth and Development Question 72
72. One set of a plant was grown at 12 hours day and 12 hours night period cycles and it flowered while in the other set night phase was interrupted by flash of light and it did not produce flower. Under which one of the following categories will you place this plant?
[2004]
(a) Long day
(b) Darkness neutral
(c) Day neutral
(d) Short day
Show Answer
Answer : d
Hints & Solutions
(d) Short day plants require long uninterrupted dark period for flowering. They will not produce flower if night was interrupted by flash of light.
