What are the Different Types of Movements in Plants

Different Types of Movements in Plants

 

  1. i) Tactic movement:

 

In this type of movement plant body moves as a whole from one place to another due to stimulus such as light, water and chemicals etc. For example chlamydomonas always moves towards low intensity of light.

 

  1. ii) Nastic movement:

 

These movements are shown by a part of stationary plant due to external stimulus. For example movements of bud scales and flower petals. Movement of mimosa pudica.

 

iii) Tropic movement:

 

When part or parts of the plant move in response to the stimulus then it is known as tropic movement. Two types of response are shown; positive and negative. There are three types of tropic movement:

 

  1. a) Geotropism:

 

The response shown by the tips of the shoots and roots of a plant to the stimulus of gravity is known as geotropism.

 

  1. b) Phototropism:

 

The response shown by the shoots and roots of the plant to the stimulus of light is known as phototropism.

 

  1. c) Hydrotrogism:

 

The response of growing tissues of plant to the stimulus of water known as hydrotropism.

 

 

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