The growth of a plant or a plant part towards or away from light is called .

thigmotropism

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phototropism

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hydrotropism

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Solution

The correct option is B phototropism

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Similar questions

Q. The behavioural response of plants where they move towards or away from a stimulus is called .

In tropic movements, plant parts move

(a) away from the stimulus

(b) towards the stimulus

(d) only towards water

Match the following:

$\begin{matrix} A & B (1) Growth of sunflower towards a light source & (i) Chemotropism (2) Growth of tree roots towards earth & (ii) Hydrotropism (3) Growth of plant roots towards or away from moisture & (iii) Phototropism (4) Growth of a plant part in response to a chemical stimulus & (iv) Geotropism \end{matrix}$

Q. Name the plant part :
(a) which bends in the direction of gravity but away from light
(b) which bends towards light but away from the force of gravity

Q. The movement or growth of any part of a plant in response to an external stimulus is called tropism or tropic movement.

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