Dec 13, 2025 · A tree is a 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 …

Dec 13, 2025 · Trees are organized into three major organs: roots, stems, and leaves. All the tree branches and central stem terminate in growing points called shoot apical meristems.

Among the lower, or nonseed-bearing, orders of plants, the tropical tree fern is the only one that may be called a tree. It grows from spores instead of from seeds.

Dec 13, 2025 · 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.

Dec 13, 2025 · Most tree species have bark that is unique in structure and appearance; in fact, many trees can be identified by the characteristics of their bark alone. In some species the bark looks …

Oct 28, 2025 · Tree form has a genetic component, because some species are able to exist in an erect form where other species cannot. Examples of this are limber pine (Pinus flexilis) and bristlecone …

Introduction Trees are tall, woody plants. They usually have a stem called a trunk. Trees are some of the largest and oldest living things on Earth. Some trees live for hundreds or even thousands of years. …

Phylogenetic tree, a diagram showing the evolutionary interrelations of a group of organisms derived from a common ancestral form. The ancestor is in the tree “trunk”; organisms that have arisen from it …

tree, Woody perennial plant. Most trees have a single self-supporting trunk containing woody tissues, and in most species the trunk produces secondary limbs called branches.

Tea tree oil, essential oil derived from the tea tree (Melaleuca alternifolia), a species of tall shrub or tree in the myrtle family (Myrtaceae) originally native to the Bungawalbin Valley in New South Wales, …