Question

An ____ or scar appears at the base of the petiole where the petiole attaches to the stem

Answer 1

An abscission scar appears at the base of the petiole where the petiole attaches to the stem, after the leaf has been shed by the plant.

Step-by-step explanation:

An abscission scar appears at the base of the petiole where the petiole attaches to the stem. In plants, the petiole is the stalk connecting the leaf to the plant stem at areas called nodes, and it allows for flexibility and the positioning of the leaf for optimal photosynthesis. When the leaf falls, typically after a process called abscission whereby the plant cuts off the leaf, a mark or scar is left on the stem, indicating where the petiole was attached. The leaves above these nodes often arise from axillary buds, which are capable of developing into a new branch or flower.

Answer 2

The correct answer is known as a "Leaf Scar".

A Leaf Scar is a mark that is left by the leaf itself, once it falls down from the twig or branch it came off. A leaf scar is commonly found at the part of the plant where it branches.