Thigmotropism Movement
Thigmotropism Movement
The tropic response of organisms to touch or contact with a solid surface is called thigmotropism. It can be positive and negative based on response of plant part towards the stimulus of touch.
Examples :
The climbing parts of a plant that twine around a support are positively thigmotropic. When such a plant part touches a support, the side of its apical meristem in contact with the support grows slower than the other side. This is how tendrils coil around a support. A negative thigmotropism is a response away from the touch stimulus. An example of negative thigmotropism is the growth of roots underneath the soil. When an elongating root comes in contact with an object, e.g. rock,it grows away from the object.
Growth of pollen tube and curling of tendrils around a support are types of | |||
| Right Option : C | |||
| View Explanation | |||
Like animals plant also respond to the touch stimulus. Such type of movements in plant are called as | |||
| Right Option : D | |||
| View Explanation | |||
Thigmotropism is a type of | |||
| Right Option : A | |||
| View Explanation | |||
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