Plant Growth and Development Question 66
66. What is the site of perception of photoperiod necessary for induction of flowering in plants ?
(a) Lateral buds
(b) Pulvinus
(c) Shoot apex
(d) Leaves
Show Answer
Answer : d
Hints & Solutions
(d) During flowering, photoperiodic stimulus is perceived by leaves of plants. In 1920, W. W. Garner and H. A. Allard published their discoveries on photoperiodism and felt it was the length of daylight that was critical, but it was later discovered that the length of the night was the controlling factor.
