What is meant by Control and Coordination?

Control and Coordination

Control is the faculty to regulate an activity, start it, slow down it, expedite it or stop it. Coordination is orderly working of different parts so as to smoothly carry out an activity. For example, during the eating of food, nose smells it, saliva moistens the food, teeth masticate it and tongue tastes it as well as moves it for mastication and swallowing. However, if the nose is blocked due to a bad cold, the food will appear bland or tasteless showing the requirement of coordination between smell and taste.

Major controls and coordination are achieved through movements. Movements or changes in position are of two types, growth movements and nongrowth movements. Growth movements mostly occur in plants, e.g., sprouting of seed to form a seedling. Animals perform mostly nongrowth movements, e.g., running, playing, buffalo chewing cud, shouting. Plants also perform many non-growth movements e.g., folding and drooping of leaves in Sensitive Plant on being touched.

Movements usually occur in response to change in the external or internal environment. They are carefully controlled and coordinated. For example, while talking to your classmates in the class you whisper. In the playground, you shout at your classmates.

In multicellular organisms, control and coordination are achieved by means of specialized tissues and organs. In animals, this is performed by nervous tissue and muscular tissue. Additional control and coordination is achieved through the endocrine system. In plants, only the endocrine system operates in control and coordination.