Stimulus And Response Biology

Stimulus a change in the environment internal or external that is detected by a receptor and elicits a response.

Stimulus and response biology. For example a simple reflex arc. Stimulus such as heat light cold pressure smell touch water and force of gravity. Furthermore the stimulus is a detectable change in the organism s internal or external environment while a response is specific to a stimulus.

The main difference between stimulus and response is that a stimulus is an event or condition which initiates a response whereas response is the organism s reaction to a stimulus. Stimulus receptor sensory neurone relay neurone motor neurone effector response the nerve pathway followed by a reflex action is called a reflex arc. Response the activity of a cell or organism in terms of movement hormone secretion or enzyme production as a result of a stimulus.

Start studying a level biology. For example the plants respond to sunlight by bending towards it. In the latter case an autonomic or a spontaneous reaction is produced.

This is called response. A stimulus is a change in the intensity or direction of application of energy which produces an appreciable effect upon the living protoplast and brings about a visible reaction or response. A stimulus is any condition agent or action which incites a physiological or psychological activity causing a reaction or response.

Different organisms respond differently to different types of stimuli sing. In most animals this job is done by the central nervous system cns. Co ordination involves processing all the information from receptors so that the body can produce a response that will benefit the whole organism.

The ability to respond to a stimulus is called irritability and is a necessary condition for life. The temperature is the stimulus and the individual then protects themselves. An example of a stimulus is an individual placing a hand on a hot surface.