Stem: The ascending aerial part of the plant that directly develops from the plumule is called a stem. It is the link between the roots and the leaves and flowers. The stem is the strongest part of a tree and is known as the trunk.
Parts of a stem. A stem consists of the following three parts :
(i) Node. It is a place on the stem or a branch from which a leaf is produced.
(ii) Internode. This is the part of the stem which lies in between the two successive nodes.
(iii) Bud. It is the condensed part of the stem lying either at the apex of a stem or in the axil of a leaf.
