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Which of the ...

Question

Which of the following is a growth movement and which is not?
(a) folding up of leaves of sensitive plant on touching with the hands.

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Solution

The leaves of the sensitive plant fold up immediately on touching and it does not involve any growth movement.

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Similar questions

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)

Q. 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.

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

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