Name: Sensory Organs of the Body
Uploaded: 2019-07-19
Duration: 13 min 6 s
Description: Sensory organs are required to perceive the external environment. There are five sensory organs in the human body. Watch the video to learn more about the se...

Question

What is meant by sensitivity?

Accepted Answer

Sensitivity refers to the ability to detect the changes in the environment shown by the plant in response to various stimuli. The plant shows different growth movements due to the action of these stimuli. Some stimuli are light, gravity, touch, water, etc. These movements sometimes assist the plant in locomotion. The movements in the plant are classified into tactic, tropic, and nastic movements.

The differences between them are:

Tactic movement Tropic movement Nastic movement

This moment depends on both the intensity of the stimulus and the direction of the stimulus.
It is the movement of a plant that is controlled by the direction of the stimulus. It is the movement that is controlled by the intensity of the stimulus.

Auxin does not play any key role in this movement. Auxin plays a key role in this type of movement. Auxin does not have a definite role in this type of movement.

Turgidity does not play any role in this movement. There is no definite role of turgidity in this movement. Turgidity plays a definite role in this movement.

What is meant by sensitivity?

Important Questions on Control and Coordination in Living Organisms

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