NEET BIOLOGY

Detailed explanation-1: -All living things are able to respond to stimuli in the external environment. For example, living things respond to changes in light, heat, sound, and chemical and mechanical contact. To detect stimuli, organisms have means for receiving information, such as eyes, ears, and taste buds.

Detailed explanation-2: -The ability of an organism or organ to respond to external stimuli is called sensitivity.

Detailed explanation-3: -The ability of an organism to respond to external stimuli is called sensitivity. For example, Plants grow towards light(external stimuli) sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival.

Detailed explanation-4: -Receptors are groups of specialised cells. They detect a change in the environment stimulus. In the nervous system this leads to an electrical impulse being made in response to the stimulus. Sense organs contain groups of receptors that respond to specific stimuli.

Detailed explanation-5: -Anything that causes a living organism to react is called a stimulus. All living organisms respond to their environment. Response to stimuli is an important characteristic of life.