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The petiole is a stalk that attaches a leaf to the plant stem. In petiolate leaves the leaf stalk may be long (as in the leaves of celery and rhubarb), or short (for example basil). When completely absent, the blade attaches directly to the stem and is said to be sessile.
17 gru 2016 · The petiole is the stalk that supports a leaf in a plant and attaches it to the stem. Many people often call it a stem, which is incorrect. A stem is the part of the plant that serves as the main source of support and produces nodes and roots, and that’s not what we observe in petioles.
7 lut 2022 · Petioles are important plant organs connecting stems with leaf blades and affecting light-harvesting ability of the leaf as well as transport of water, nutrients and biochemical signals.
21 lis 2023 · A petiole is a stalk that attaches the blade of a leaf to the main stem of the plant. There are many functions of a petiole, and this lesson provides a brief overview of what a petiole is and...
In leaf: Leaf morphology …plant stem by a stalklike petiole. In angiosperms leaves commonly have a pair of structures known as stipules, which are located on each side of the leaf base and may resemble scales, spines, glands, or leaflike structures.
petiole. The stalk that attaches the leaf lamina to the stem. The point of attachment is often strengthened by a widening of the base of the petiole. Some leaves (sessile leaves) lack a petiole and are joined to the stem at the base of the lamina. Sessile leaves are characteristic of most monocotyledons.
Some leaves are attached to the plant stem by a stalklike petiole and are called petiolate leaves (Figure \(\PageIndex{2}\)). Although petioles are narrow and often resemble stems, they are considered part of the leaf. A petiolate leaf thus consists of the blade and the petiole.
