Question

Which of the following is not caused by a growth movement?
(a) bending of the shoot of a plant in response to light
(b) closing up of leaves of a sensitive plant on touching with an object
(c) climbing up of a plant on an object by using tendrils
(d) movement of the root of a plant towards a source of water

Answer 1

(b) closing up of leaves of a sensitive plant on touching with an object

This is a non-directional movement of a plant in response to touch.