(b)What are the different types of tropisms? Define each type of tropism. Write the name of the stimulus in each case.
(b)What are the different types of tropisms? Define each type of tropism. Write the name of the stimulus in each case.
•The five types of tropism are phototropism, geotropism, chemotropism, hydrotropism, and thigmotropism which have the stimulus of light, gravity, chemical, water, and touch respectively.
Phototropism:
The movement of a plant part in response to light is called phototropism.
Name of the stimulus: Light.
Geotropism:
The movement of a plant part in response to gravity is called geotropism.
Name of the stimulus: Gravity.
Chemotropism:
The movement of a plant part in response to a chemical stimulus is called chemotropism.
Name of the stimulus: Chemical.
Hydrotropism:
The movement of a plant part in response to water is called hydrotropism.
Name of the stimulus: water.
Thigmotropism:
The directional growth movement of a plant part in response to the touch of an object is called thigmotropism.
Name of the stimulus: Touch.
Phototropism:
The movement of a plant part in response to light is called phototropism.
Name of the stimulus: Light.
Geotropism:
The movement of a plant part in response to gravity is called geotropism.
Name of the stimulus: Gravity.
Chemotropism:
The movement of a plant part in response to a chemical stimulus is called chemotropism.
Name of the stimulus: Chemical.
Hydrotropism:
The movement of a plant part in response to water is called hydrotropism.
Name of the stimulus: water.
Thigmotropism:
The directional growth movement of a plant part in response to the touch of an object is called thigmotropism.
Name of the stimulus: Touch.
