Tree
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In 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, e.g., including only woody pl
Common ash (Fraxinus excelsior), a deciduous broad-leaved (angiosperm) tree
European larch (Larix decidua), a coniferous tree which is also deciduous
Tall herbaceous monocotyledonous plants such as banana lack secondary growth, but are trees under the broadest definition.
The Daintree Rainforest
Wood
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Wood is a structural tissue/material found as xylem in the stems and roots of trees and other woody plants. Being a natural material, it is characterized as an organic material – a natural composite o
Tree
…The cells are continually dividing, creating phloem cells on the outside and wood cells known as xylem on the inside. The newly created xylem is the sapwood. It is composed of water-conducting cells and associated cells which are often living, and is usually pale in colour. It transports water and minerals…
A knot on a tree trunk
Wood knot in vertical section
A section of a yew branch showing 27 annual growth rings, pale sapwood, dark heartwood, and pith (center dark spot). The dark radial lines are small knots.
Cross-section of an oak log showing growth rings