Which leaf arrangement is characterized by a single leaf at each node on the stem?

Which leaf arrangement is characterized by a single leaf at each node on the stem?

• A. Alternate (leaf arrangement)
• B. Opposite
• C. Whorled
• D. Rosette

Answer: (A)

This question is about how leaves attach to the stem along its length. When there is a single leaf emerging at each node, with the leaves alternating sides as you move up the stem, that pattern is called the alternate leaf arrangement. It creates a zigzag look because each new leaf is offset from the one below it. This differs from the opposite arrangement, where a pair of leaves grows from the same node directly opposite each other on the stem. It also differs from the whorled arrangement, where three or more leaves share the same node around the stem. Rosette is a different form where leaves cluster near the base of the plant rather than along the stem. So the description of one leaf per node along the stem best matches the alternate arrangement.

This question is about how leaves attach to the stem along its length. When there is a single leaf emerging at each node, with the leaves alternating sides as you move up the stem, that pattern is called the alternate leaf arrangement. It creates a zigzag look because each new leaf is offset from the one below it.

This differs from the opposite arrangement, where a pair of leaves grows from the same node directly opposite each other on the stem. It also differs from the whorled arrangement, where three or more leaves share the same node around the stem. Rosette is a different form where leaves cluster near the base of the plant rather than along the stem.

So the description of one leaf per node along the stem best matches the alternate arrangement.