Movement of stomatal opening and closing and opening of Oxalis flower share the common feature that both are

Options

(a) photonastic
(b) thigmonastic
(c) seismonastic
(d) thermonastic

Correct Answer:

photonastic

Explanation:

Photonastic movement is a nastic movement (due to external stimuli) in response to change in light intensity, e.g. Stomatal opening and closing, the opening and closing of flowers.