Which one of the following is not true for the roots of a plant?

Positively geotropic

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Positively phototropic

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Positively hydrotropic

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Negatively phototropic

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Solution

The correct option is B Positively phototropic
The roots of a plant move deeper towards the earth in response to gravity and water but they move away from light. Therefore, they are positively geotropic, positively hydrotropic but negatively phototropic.
So, the correct answer is option B.

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Similar questions

The root of a plant is :

(i) positively phototropic but negatively geotropic

(ii) positively geotropic but negatively phototropic

(iii) negatively phototropic but positively hydrotropic

(iv) negatively hydrotropic but positively phototropic

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