When the le a ves of a sensitive plant are touched with a finger, th e y fold up and when light fades at dusk, the petals of a dandelion flower close. (a) State one way in which the above two processes are simila r . (b) State two ways in which the above two processes differ.

Question

Philoid · Accepted Answer

(a) Above mentioned processes are similar i.e. both are nastic movements.

(b) In first process of folding of leaves of sensitive plant (thigmonasty), the stimulus is touch but in second process of folding of petals of dandelion flower (photonasty), stimulus is light. First process (thigmonasty) is not a growth movement but second process (photonasty) is a growth movement.

When the leaves of a sensitive plant are touched with a finger, they fold up and when light fades at dusk, the petals of a dandelion flower close.(a) State one way in which the above two processes are similar.(b) State two ways in which the above two processes differ.

When the leaves of a sensitive plant are touched with a finger, they fold up and when light fades at dusk, the petals of a dandelion flower close.
(a) State one way in which the above two processes are similar.

(b) State two ways in which the above two processes differ.