induced movements
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By,Georgina.P
Induced Movements.
Tropic Movements.
The movements of plant which are directional, either towards the stimulus or away from it, are called Tropic Movements.
Tropism.
A tropism is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus.
Types of Tropic Movements.
*Phototropism
*Geotropism
*Chemotropism
*Hydrotropism
Phototropism.
The bending of a plant towards the light is called as phototropism.
It is the growth and response to a light stimulus.
Geotropism.
The downward movement of a plant in response to gravitational force is called geotropism.
Geotropism is also known as gravitropism.
Chemotropism.
The growth and movement of plants navigated by a chemical stimulus from outside the plant.
An example of chemotropic movement can be seen during the growth of the pollen tube.
It can be also written that conversion of a flower into fruit is the example of chemotropism.
Hydrotropism.
Hydrotropism is a plant's growth response in which the direction of growth is determined by a stimulus in water concentration.
Quiz Time!The movement or growth of plants in response to gravity is known as _______________.
The movement or growth of plants in response to lights or colours of light is known as _________.
The movement or growth of plants in response to water is known as _____________.
The movement or growth of plants in response to chemicals is known as ____________.