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Differentiate between the Following: Chemotropism and Thigmotropism

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Question

Differentiate between the Following:

Chemotropism and Thigmotropism

Distinguish Between
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Solution

Sr. No. Chemotropism Thigmotropism
1. Chemotropism is the growth movement of a plant part in response to a chemical stimulus. Thigmotropism is the growth movement of a plant part in response to touch or contact.
2. The stimulus is a chemical substance. The stimulus is physical contact or touch.
3. Example: The growth of the pollen tube towards the ovule is an example of chemotropism. Example: The tendrils of a climber coil around a support on touching it.
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Chapter 7: Chemical Coordination in Plants - EXERCISE [Page 118]

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Lakhmir Singh Biology [English] Class 10 ICSE
Chapter 7 Chemical Coordination in Plants
EXERCISE | Q 3. | Page 118
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