Which of the following is a growth movement and which is not?
(a) folding up of leaves of sensitive plant on touching with hand.
(b) folding up of petals of dandelion flower when light fades.

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Solution

Neither of them are growth movements. They are nastic movements.
(a) This is a thigmonastic movement.
(b) This is a photonastic movement.

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Similar questions

When the leaves of a sensitive plant are touched with a finger, they fold up and when the 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.

Q. Why is the folding up of the leaves of a sensitive plant on touching with a finger not a tropism?

Why is the folding up of the leaves of a sensitive plant on touching with a finger, not a tropism?

Q. 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

Q. Which of the following are not tropisms?
(i) growing of pollen tube in response to a sugary substance
(ii) folding up of leaves of sensitive plant in response to touch
(iii) winding of tendril around a support in response to touch
(iv) opening up of the leaves of a daisy flower in response to light
(a) (i) and (ii) (b) (ii) and (iii) (c) (i) and (iv) (d) (ii) and (iv)

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Which of the following is a growth movement and which is not? (a) folding up of leaves of sensitive plant on touching with hand. (b) folding up of petals of dandelion flower when light fades.

Neither of them are growth movements. They are nastic movements.(a) This is a thigmonastic movement.(b) This is a photonastic movement.

Which of the following is a growth movement and which is not?
(a) folding up of leaves of sensitive plant on touching with hand.
(b) folding up of petals of dandelion flower when light fades.

Neither of them are growth movements. They are nastic movements.
(a) This is a thigmonastic movement.
(b) This is a photonastic movement.