Which response is involved when a tendril coils around a support?
Answer and explanation
Correct answer: Thigmotropism
The governing concept is a directional growth response to touch. When one side of a tendril contacts a support, unequal growth causes the tendril to bend and coil around it; this response is called thigmotropism. Hydrotropism is directed by water, geotropism by gravity, and chemotropism by chemicals. Since touch is the relevant stimulus here, option A is correct.
Frequently asked questions
What is the correct answer to this question?
Thigmotropism
Why is this the correct answer?
The governing concept is a directional growth response to touch. When one side of a tendril contacts a support, unequal growth causes the tendril to bend and coil around it; this response is called thigmotropism. Hydrotropism is directed by water, geotropism by gravity, and chemotropism by chemicals. Since touch is the relevant stimulus here, option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: The Human Eye and the Colourful World. Topic: Structure of eye.
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