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Tree - Wikipedia
Common ash (Fraxinus excelsior), a deciduous broad-leaved tree European larch (Larix decidua), a coniferous tree which is also deciduousIn botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves.In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable …
Tree | Definition, Structure, Uses, Importance, & Facts | Britannica
2025年1月26日 · Tree, woody plant that regularly renews its growth. Most plants classified as trees have a single self-supporting trunk containing woody tissues, and in most species the trunk produces secondary limbs, called branches. There are few organisms as important as trees for maintaining Earth’s ecology.
Tree - Simple English Wikipedia, the free encyclopedia
A tree is a plant form that can be found in many different orders and families of plants. Trees show many growth forms, leaf type and shape, bark traits and organs. The tree form has changed separately in classes of plants that are not related, in response to similar problems (for the tree).
Tree - Structure, Growth, Adaptation | Britannica
2025年1月26日 · Tree - Structure, Growth, Adaptation: Generations of terrestrial plants recycling nutrients and energy into the stratum led to the contribution of developing rich organic soil suitable for large shrubs and herbs. Trees are organized into three major organs: roots, stems, and leaves.
A Guide to Trees - National Wildlife Federation
What Is a Tree? Trees grow, reproduce, and respond to their environment. Like all plants, trees manufacture their food through photosynthesis. Trees are in the family of woody plants which have cambium, a special layer of cells that allow the tree to increase in girth and are self-supporting with a single stem.
What is a tree? – definition, anatomy and characteristics | EcoTree
2023年11月14日 · A tree is a tall plant that can live a very long time. It has a single stem or trunk and branches that support leaves. Beneath the ground, a tree has a root system that acts as an anchor and stores the water and nutrients the plant needs to grow.
Trees | Types, Structure, Facts, and Environmental Impact
Trees are very diverse plants that are spread around the world. There are more than 73,000 discovered species of trees. Most of the trees can be categorized into four main types according to their leaves. Conifers are mostly known for their scale-like and needle-like leaves which are mostly found in cold climates.
Tree - Types, Growth, Structure | Britannica
2025年1月26日 · Tree - Types, Growth, Structure: Trees have been grouped in various ways, some of which parallel their scientific classification: softwoods are conifers, and hardwoods are dicotyledons. Forests help in soil stabilization and erosion control, protect and conserve water supplies, and prevent floods.
Parts of a Tree and Their Functions - Science Facts
2020年7月3日 · A mature tree has three basic parts: 1) roots, 2) crown, and 3) trunk or bole. Although the structure of these parts may vary based on the altitude and geographical position of the tree, each of them performs distinct functions.
A tree is a plant with a tall structure comprised of a stem and branches to support leaves, and a root system than anchors the stem as well as procures and stores essential growth elements such as water and nutrients.