In botany, the trunk (or bole) is the stem and predominant timber axis of a tree, that’s an crucial characteristic in tree identification, and which frequently differs markedly from the lowest of the trunk to the top, relying at the species. The trunk is the maximum crucial a part of the tree for wood production.
Trunks arise each in “true” woody flowers in addition to non-woody flowers which includes arms and different monocots, aleven though the inner body structure is unique in every case. In all flowers, trunks thicken over the years because of the formation of secondary growth (or in monocots, pseudo-secondary growth). Trunks may be liable to damage, along with sunburn.
Trunks which can be reduce down for the duration of logging are commonly known as logs and if they’re reduce to a particular period bolts. The term “log” is informally utilized in English to explain any felled trunk now no longer rooted withinside the floor. A stump is the a part of a trunk closing withinside the floor after the tree has been felled.
The Structure of trunk
The trunk includes 5 principal parts: the bark, internal bark, cambium, sapwood, and heartwood. From the out of doors of the tree operating in, the primary layer is the bark; that is the protecting outermost layer of the trunk. Under that is the internal bark that is made from the phloem. The phloem is how the tree transports vitamins from the roots to the shoots and vice versa. The subsequent layer is the cambium, a completely skinny layer of undifferentiated cells that divide to fill up the phloem cells at the out of doors and the xylem cells to the internal. The cambium consists of the boom meristem of the trunk. Directly to the internal of that is the sapwood, or the residing xylem cells. These cells delivery the water via the tree. The xylem additionally shops starch in the tree. Finally on the middle of the tree is the heartwood. The heartwood is made from vintage xylem cells which have been full of resins and minerals that maintain different organisms from developing and infecting the middle of the tree.