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. Subpetiolate leaves have an extremely short petiole, and may appear sessile.

2016年12月17日 · 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.

Petiole — The stalk that attaches a leaf to a stem. Pholem — Photosynthate-conducting tissue. Photosynthate — A food product (sugar or starch) created through photosynthesis. Photosynthesis — The process in green plants of converting carbon dioxide and water into food (sugars and starches) using energy from sunlight.

The Petiole. Most leaves have a stem that attaches the blade of the leaf to the rest of the plant. This is the petiole. However, in some plants, the leaves do not have a petiole and the blade is directly attached to the plant stem. These leaves are sessile (lacking a petiole).

The petiole is generally similar in structure to a stem except that the vascular and strengthening tissues are asymmetrically arranged so as to bear the weight of the lamina. The different patterns of veins evident in petioles are useful taxonomically.

The following points highlight the five main types of petioles found in plants. The types are: 1. Petiole of Cucurbita sp. 2. Petiole of Helianthus Annuus 3. Petiole of Piper Betle 4. Petiole of Nymphaea Stellata 5. Petiole of Eichhornia sp. Type # 1. …

2022年2月7日 · We present here morphological and anatomical trends in petiole traits of woody species, as a first attempt to provide a broader view on the variation in petioles, which are a key organ supporting the main photosynthetic machinery in leaf blades and playing an essential role in the hydraulic pathway within the plant.

The petiole is the stalk that connects the leaf blade to the stem of a plant. This structure plays a critical role in supporting the leaf, facilitating the transport of water and nutrients between the leaf and the rest of the plant, and allowing leaves to orient themselves toward light for …

A petiole is the stalk that joins the blade (the flat part of the leaf, also called a lamina) to the node (the attachment point on a stem). The segment of the stem between two nodes is called an internode .

The celery plant is characterized by enlarged, tender, edible petioles or leaf stalks. The petioles are broad, with sheathing bases, and consist mostly of parenchyma and collenchyma strands. These are associated with vascular bundles under the epidermis in the abaxial surface which is prominently ridged, whereas the adaxial surface is smooth.