The movement of a plant part in response to the force of attraction exerted by the earth is called:

(a) hydrotropism

(b) geotropism

(c) chemotropism

(d) phototropism

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Solution

(b) geotropism

Explanation: Geotropism is the growth of the parts of plants in response to the force of gravity. The upward growth of plant shoots is an instance of negative geotropism; the downward growth of roots is positive geotropism.

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Question 10
The movement of the shoot towards light is

(a) geotropism
(b) hydrotropism
(c) chemotropism
(d) phototropism

Question 10
The movement of the shoot towards light is

(a) geotropism
(b) hydrotropism
(c) chemotropism
(d) phototropism

The movement of a shoot towards light is:

(a) geotropism

(b) hydrotropism

(d) phototropism

What is the stimulus in :

(a) phototropism

(b) geotropism

(d) hydrotropism

(e) thigmotropism

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