Search results
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.
Leaves that do not have a petiole and are directly attached to the plant stem are called sessile (apetiolate) leaves (Figure \(\PageIndex{4}\)). In a special type of sessile leaves called perfoliate leaves, the stem passes through the center of the blade (Figure \(\PageIndex{4}\)).
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...
31 paź 2023 · Some leaves have a petiole, which attaches the leaf to the stem; leaves that do not have petioles are directly attached to the plant stem and are called sessile leaves. The arrangement of veins in a leaf is called the venation pattern; monocots have parallel venation, while dicots have reticulate venation.
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.
