Question

Example of positive and negative thigmotropism​

Answer 1

Answer:

A positive thigmotropism is a response towards the touch stimulus whereas a negative thigmotropism is a response away from the touch stimulus. Examples of positive thigmotropism are the growth of ivy on walls upon contact to walls and the coiling of tendrils or twiners upon contact to objects for support.

Explanation:

Answer 2

Answer:

A POSITIVE THIGMOTROPISM

A positive thigmotropism is a response towards the touch stimulus whereas a negative thigmotropism is a response away from the touch stimulus. Examples of positive thigmotropism are the growth of ivy on walls upon contact to walls and the coiling of tendrils or twiners upon contact to objects for support.26-Jan-2020

A NEGATIVE THIGMOTROTROPISM

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. The drooping of leaflets of Mimosa pudica when touched is not considered thigmotropism but a nastic movement.