The aerial stem of an adult tree is called a trunk. The dead, usually darker inner wood of a large diameter trunk is termed the heartwood and is the result of tylosis . The outer, living wood is termed the sapwood.

2025年1月23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 …

2023年2月2日 · The stem is the central axis of the plant, which is mostly found above the ground, the root being the other part. They may be unbranched like those in a palm tree or branched like that of rose plants. The stem is the connecting medium between the roots, the leaves, and the flowers, whose primary function is to provide mechanical support to the ...

Stem: Trees have one single woody stem that is the predominant support of the plant’s structure. This is known as its trunk. Diameter: A tree’s stem or trunk has a minimum 3-inch diameter at 4.5 feet above ground. The stem then has a full crown of foliage at the top. Perennial: Unlike certain shrubs or other plants, trees are present-year ...

Anatomy of Tree Stems: We have discussed the layers of tree stems, including outer bark, cambium, xylem, and phloem, which are essential for protection, growth, and nutrient transport. Functions of Tree Stems: The myriad roles played by tree stems, from providing structural support to facilitating water and nutrient transport, have been ...

2025年1月26日 · As vascular plants, trees are organized into three major organs: the roots, the stems, and the leaves. The leaves are the principal photosynthetic organs of most higher vascular plants. They are attached by a continuous vascular system to the rest of the plant so that free exchange of nutrients, water, and end products of photosynthesis (oxygen ...

Discuss how stems grow by elongation and by increasing their girth or diameter. Identify the tissues that are initially produced by apical meristems and the cells into which they eventually mature. Distinguish monocot and dicot stems based on the arrangement of the vascular bundles.

Tree roots possess an apical meristem (meristematic tissue found at the tip) that is protected by a root cap. The root cap sloughs off its oldest tissues to provide lubrication as the root is pushed through the soil. As the apical meristem grows, it cuts off new cells through cell division, and a zone of elongation is formed directly behind it.

2024年11月26日 · Stems support leaves, flowers, and buds. They connect the roots to the leaves, helping to transport absorbed water and minerals to different parts of the plant. It also helps to transport the products of photosynthesis, namely sugars, from the leaves to the rest of the plant. Stems also store food for the plant, mainly in the form of starch.

2022年7月31日 · Stems may be herbaceous (soft) or woody in nature. Their main function is to provide support to the plant, holding leaves, flowers and buds; in some cases, stems also store food for the plant. A stem may be unbranched, like that of a palm tree, or it may be highly branched, like that of a magnolia tree.