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Question
Some plants have the ability to twice around objects in response to physical contact is called as
Some plants have the ability to twice around objects in response to physical contact is called as
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Solution
The correct option is C Thigmotropism
Thigmotropism is a directional movement in which a plant moves or grows in response to touch or contact stimuli. It is found in twiners and tendrils.It occurs because Auxin makes the cells in the tendrils that face away from the support growing longer and stronger. This helps the tendrils to also find the support to grow around. The cells of the tendrils that have contact with the support are devoid of auxin and therefore weaker; this combined process causes the tendrils to coil around the supporting object. Common examples which show thigmotropism: money plant, Ivy plants etc. Hence option C is correct.
Thigmotropism is a directional movement in which a plant moves or grows in response to touch or contact stimuli. It is found in twiners and tendrils.
It occurs because Auxin makes the cells in the tendrils that face away from the support growing longer and stronger. This helps the tendrils to also find the support to grow around. The cells of the tendrils that have contact with the support are devoid of auxin and therefore weaker; this combined process causes the tendrils to coil around the supporting object. Common examples which show thigmotropism: money plant, Ivy plants etc. Hence option C is correct.
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