Plant parts show two types of movements, one dependent on growth and other independent of growth. Give one example of the movement in plant parts :
(a) which depends on growth
(b) which does not depend on growth
(a) Phototropism depends on growth. It is the growth of plant stem in response to sunlight.
(b) Thigmonasty does not depend on growth. It is a non directional movement of plant part, such as leaves, in response to touch.
Lakhmir Biology 2013