AP BIOLOGY

Detailed explanation-1: -Ingestion is the consumption of a substance by an organism. In animals, it normally is accomplished by taking in a substance through the mouth into the gastrointestinal tract, such as through eating or drinking. In single-celled organisms ingestion takes place by absorbing a substance through the cell membrane.

Detailed explanation-2: -The ingestion of food is the process of intake of food by an organism. In humans, the mouth is responsible for the ingestion. The ingested food is processed by chewing and biting by the teeth and lubricated by the saliva so that it can be swallowed with the help of the tongue.

Detailed explanation-3: -Ingestion can be referred to as an organism’s consumption of a substance. In the case of human beings, when the food is taken in from the mouth and then masticated and swallowed for further processing, it is called ingestion. It takes place by absorbing substances by cell membranes in single-celled organisms.

Detailed explanation-4: -The process of taking food or consuming another substance into the body by swallowing is known as ingestion. In animals, the ingestion takes place through the mouth whereas in single-celled organisms it takes place by absorbing a substance through the cell membrane.

Detailed explanation-5: -Absorption-digested food is absorbed through villi in the small intestine. Assimilation-digested food is stored or utilised in the cells. Egestion-elimination of undigested food from the body.