(a) What is tropism? (b) Mention the differences between tropism and nastic movement in tabulated form.

(a) Tropism or tropic movements are directional growth movements in which the
direction of movement is determined by the direction of stimulus. Geotropism, phototropism,
hydrotropism, chemotropism are different types of tropic movements.
(b) Tropism: – (1) It is a growth dependent process that is determined by the direction of stimulus.
(2) It is directional in nature.
(3) Such movements exhibit a slow response towards any stimulus.
Nastic Moaement:-
(1) It is a growth independent process.
(2) It is non-directional in nature.
(3) Such movements exhibit an immediate response towards a stimulus.