NEET Botany Plant Growth and Development Questions Solved

AIIMS - 2014

A physiological response of plants to the duration of light and darkness is a:-

(a) daily phase cycle
(b) circadian rhythms
(c) biological clock
(d) photoperiodism

Audio Explanation:

Photoperiodism is the response of plants to the relative length of day and night. Phototaxis is axis (movement) in which the stimulus is light. Phototropism is tropism in which stimulus is light, i.e., bending of plant towards light.

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