Question

Very Short answer
1. Define irritability.​

Answer 1

Answer:

Irritability. Specialty. Psychiatry. Irritability is the excitatory ability that living organisms have to respond to changes in their environment. The term is used for both the physiological reaction to stimuli and for the pathological, abnormal or excessive sensitivity to stimuli.

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Answer 2

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The power to respond to stimulus is known as irritability.It may take place due to the change of both external and internal environment.

For example, the leaflets of Mimosa pudica (sensitive plant) close up in pairs and droop down when touched.