AP BIOLOGY

Detailed explanation-1: -A plant stem’s nodes are those critical areas from which leaves, branches, and aerial roots grow out from the stem, while the internodes are those intervals between the nodes.

Detailed explanation-2: -Lateral buds and leaves grow out of the stem at intervals called nodes; the intervals on the stem between the nodes are called internodes. The number of leaves that appear at a node depends on the species of plant; one leaf per node is common, but two or more leaves may grow at the nodes of some species.

Detailed explanation-3: -Nodes are points of attachment for leaves, aerial roots, and flowers. The stem region between two nodes is called an internode.

Detailed explanation-4: -Nodes. A node is an area on a stem where buds are located (figure 6). It is a site of great cellular activity and growth. It is here that small buds develop into leaves, stems or flowers. When pruning, it is important to locate a plant’s nodes.

Detailed explanation-5: -The petiole is a stalk that connects the blade with the leaf base.