Which term denotes the region of the stem where leaves originate?

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Study for the Morphology of Flowering Plants Test. Enhance your understanding with multiple-choice questions, complete with explanations. Prepare for your exam!

Multiple Choice

Which term denotes the region of the stem where leaves originate?

Explanation:
Leaves originate at nodes on the stem, the points where the leaf is attached. At a node you’ll often find an axillary bud, which can later develop into a lateral shoot. The segment of stem between two nodes is called an internode, so that part isn’t where leaves originate. Pulvinus is a swollen leaf-base region involved in movement, not the site where leaves begin. So the correct term for the region where leaves originate is the node.

Leaves originate at nodes on the stem, the points where the leaf is attached. At a node you’ll often find an axillary bud, which can later develop into a lateral shoot. The segment of stem between two nodes is called an internode, so that part isn’t where leaves originate. Pulvinus is a swollen leaf-base region involved in movement, not the site where leaves begin. So the correct term for the region where leaves originate is the node.

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