Trunk | tree | Britannica
...Pulped forest tree trunks (boles) are by far the predominant source of papermaking fibre. The bole of a tree consists essentially of fibres with a minimum of nonfibrous elements, such as pith and parenchyma cells....
https://www.britannica.com/science/trunk-tree
Tree - Structure, Growth, Adaptation | Britannica
...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....
https://www.britannica.com/plant/tree/Tree-structure-and-growth
Tree | Definition, Examples, Parts, Structure, Uses, Importance ...
...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 secondary limbs, called branches....
https://www.britannica.com/plant/tree
Tree - Bark, Structure, Protection | Britannica
...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 similar throughout the life of the plant, while in others there are dramatic changes with age....
https://www.britannica.com/plant/tree/Tree-bark
tree: parts of a tree trunk - Students | Britannica Kids | Homework Help
...The xylem consists of the heartwood, which is inactive yet imparts strength to the tree, and the sapwood, which carries the sap from the tree's roots to its leaves. The cambium is where the tree grows in diameter. Here, wood is produced on the inside and bark on the outside....
https://kids.britannica.com/students/assembly/view/171901
tree - Students | Britannica Kids | Homework Help
...While the cambium makes the tree trunk and its branches grow in size, the leaves produce the food that builds the tissues of the tree. Using the energy from sunlight, the green coloring matter in the leaves (chlorophyll) takes carbon dioxide out of the air....
https://kids.britannica.com/students/article/tree/277422
Tree - Height, Growth, Structure | Britannica
...Tree trunks often shrink in diameter during sunny summer days because of the large amount of water lost from the leaves by transpiration. The trunks will then swell during the night as water is restored to the tree from the soil....
https://www.britannica.com/plant/tree/Tree-height-growth
Tree fern | Growing, Propagation & Maintenance | Britannica
...Instead of the bark and wood that characterize the trunks of seed plant trees, the trunks of tree ferns are composed of rhizomes modified to grow vertically and embedded in a dense mantle of adventitious roots. These trunks may reach heights of 25 metres (80 feet) or more in some species....
https://www.britannica.com/plant/tree-fern
Tree - Anatomy, Organization, Wood | Britannica
...In a given tree in a given year, any combination of these variations may be seen from crown to base. The normal condition, especially in trees of temperate regions, is the development of a single ring during each growing season. Other rings formed during the season are called false rings....
https://www.britannica.com/plant/tree/The-anatomy-and-organization-of-wood
Tree - Adaptations, Structure, Growth | Britannica
...Plants that can most fully exploit a habitat tend to dominate it, and, since trees have evolved trunks that allow them access to the aerial environment and massive root systems that permit them to infiltrate the subterranean environment, they dominate much of the biosphere....
https://www.britannica.com/plant/tree/Adaptations