Sensitivity in plants and animals

All plants and animals are sensitive. Any change that is detected is called a stimulus, if necessary plants respond to these stimuli. Sense organs are groups of receptor cells, these respond to specific stimuli.

When the cells of a sense organ are stimulated, they relay this information along nerve cells( neurons) to the central nervous system (brain and spinal cord) This message travels in the form of an electrical impulse. The central nervous system (brain and spinal cord) can coordinate information and send outgoing electrical impulses to an effector, which can cause a response.    

This is the process.....

STIMULUS...... SENSE…