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Sunday, 2 December 2018

Comparison of Nastism, Taxis and Tropism

Types of movement - Stimuli - Response

• Mastic movement - Non directional - Non directional movement of parts of plants , due to changes in cell turgor and growth rate

• Taxis - Directional - Directional movement of motile organisms or motile part of organisms towards stimuli (positive) or away from it (negative)

• Tropism - Directional - Directional growth movements of parts of plants towards stimuli (positive) or away from it (negative)

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