CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Thigmotropism

When the leav...

Question

When the leaves of a Mimosa pudica plant are touched with a finger, they fold up quickly. This is an example of :
(a) chemotropism
(b) thigmonasty
(c) photonasty
(d) thigmotropism

Open in App

Solution

(b) thigmonasty

The leaves of a Mimosa pudica plant show response to touch. This response is non-directional and is categorised as a thigmonastic movement.

Suggest Corrections

thumbs-up

5

Similar questions

Q. The leaves of mimosa pudica plant fold up quickly when touched with a hand. This is known as

Q. The leaves of Mimosa pudica fold up and droop when touched. This happens due to change in .

The climbing organs of plants like tendrils grow towards any support which they happen to touch and wind around the support. This is an example of :

(a) chemotropism

(b) nastic movement

(c) thigmotropism

(d) geotropism

Q. (a) What is meant by positive tropism and negative tropism? Explain with examples.
(b) Define thigmotropism. Give one example of thigmotropism.
(c) What is the difference between thigmotropism and thigmonasty? Name one plant which exhibits thigmotropism and one plant which exhibits thigmonasty. What behaviour (or responses) of these plants make you think that they exhibit thigmotropism and thigmonasty respectively?

Q. Dandelion flowers open the petals in bright light during the daytime but close the petals in dark at night. This response of dandelion flowers to light is called :
(a) phototropism
(b) thigmonasty
(c) chemotropism
(d) photonasty

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

BIOLOGY

Watch in App

explore_more_icon

Explore more

Standard X Biology

Join BYJU'S Learning Program

CrossIcon