Digestion. Digestion is the breakdown of food into simpler molecules that can be absorbed by the body. The digestive system is actually a long hollow tube called the gastrointestinal tract, or GI tract. The digestive system includes the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. Several major glands include the salivary glands, the pancreas, and the liver. The first task of the digestive system is to break down food into a fine pulp (mechanical digestion). When the food is physical broken down, digestive chemicals break the food down into small molecules (chemical digestion). The mouth is the organ in which the process of digestion begins.
clone. Noun. 1. A cell, group of cells, or organism that is produced asexually from a single ancestor. The cells of an individual plant or animal are clones because they all descend from a single fertilized cell. A clone may be produced by fission, in the case of single-celled organisms, or by budding, as in the hydra.
A clone is an exact genetic copy of a plant or animal. Some clones are real buds.. Clones can be found naturally in nature in single-cell organisms that reproduce asexually â¦by forming buds like plants. These organisms develop from only one parent and are considered clones.