science
Grade-4-
Easy
Question
Vines respond to touch by:
- Folding
- Coiling around the object
- Growing in a straight line
- They do not respond to touch.
Hint:
It shows thigmotropism.
The correct answer is: Coiling around the object
The correct option is b)Coiling around the object.
Thermotropism is a directed growth movement that occurs as a mechano-sensory response to touch stimuli. Thigmotropism is usually found in entwined and climbing plants, but plant biologists have also found thermotropic responses in flowering plants and fungi.
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