Plant stem - Wikipedia
A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and the shoots in the xylem and phloem, engages in photosynthesis, stores nutrients, and produces new living tissue. [1]
Stem | Description, Facts, & Types | Britannica
2024年9月3日 · Stem, in botany, the plant axis that bears buds and shoots with leaves and, at its basal end, roots. The stem conducts water, minerals, and food to other parts of the plant and may also store food or be photosynthetic itself. Learn more …
30.3: Stems - Stem Anatomy - Biology LibreTexts
2024年8月28日 · Stem Anatomy. The stem and other plant organs are primarily made from three simple cell types: parenchyma, collenchyma, and sclerenchyma cells. Parenchyma cells are the most common plant cells. They are found in the stem, the …
30.2: Stems - Functions of Stems - Biology LibreTexts
2023年10月31日 · Plant stems, whether above or below ground, are characterized by the presence of nodes and internodes. Nodes are points of attachment for leaves, aerial roots, and flowers. The stem region between two nodes is called an internode.
30.2: Stems - Biology LibreTexts
The stem of a plant bears the leaves, flowers, and fruits. Stems are characterized by the presence of nodes (the points of attachment for leaves or branches) and internodes (regions between nodes). Plant organs are made up of simple and complex tissues. The stem has three tissue systems: dermal, vascular, and ground tissue.
Plant - Stem Structure, Function, Types | Britannica
2024年9月13日 · Plant - Stem Structure, Function, Types: A plant body consists of stems, leaves, roots, flowers, fruits, and seeds. Stems are usually the main axis of a plant, leaves act as the primary site of photosynthesis, and roots absorb water and nutrients.
Parts of a Stem With Their Structures and Functions - Science Facts
2023年2月2日 · A typical plant stem consists of eight distinct parts, containing six elements and two organs. The six elements are: 1) nodes , 2) internodes , 3) terminal or apical bud , 4) lateral or axillary bud , 5) petiole and 6) pedicel.
Plant Stems - Basic Biology
2015年5月31日 · Plant stems are a significant organ for the majority of plant species. They perform many functions that help plants grow, compete and survive across a huge range of environments. Stems can be either fleshy or go through …
Angiosperm - Stems, Photosynthesis, Reproduction | Britannica
2024年8月31日 · The stem is an aerial axis of the plant that bears leaves and flowers and conducts water and minerals from the roots and food from the site of synthesis to areas where it is to be used. The main stem of a plant is continuous with the root system through a transition region called the hypocotyl.
Stems - Biology Online Tutorial
Stems. Stem provides structural support to plants. Table of Contents. External Form of a Woody Twig. A woody twig, or stem, is an axis with leaves attached. The leaves are arranged in various ways around and on the axis.