A tree always wants to grow toward the Sun (phototropism), and individual branches will grow toward the brightest location, as openings in a forest or stand. The most successful vertical branch can often become the main trunk.
Constant winds can also force trunks to bend, as they will attempt to grow vertically despite being bent by wind.
Trunks
The tree trunks are cylindrical because they grow from the center and outwards. They grow uniformly and this is evident from the rings when the trees are cut.
The mangrove trees can have many trunks, but the banyan tree has both multiple trunks and above-ground "prop roots" that can grow vertically and horizontally.
The rings on a tree represent the age. Each year the tree grows and so it makes a ring inside the trunk. If it was a good year for rainfall and sunlight then the tree makes a thick line and if it was a bad year like a drought then it grows little and the ring is small and thin.
people eat the fruit from the tree, live in the trunks of the tree and get water from the tree due to the fact it holds water like a cactus
Cellulose makes the trunk of a tree sturdy.
Tree trunks is that trees middle position.
tree trunks have xylem and phloem
Trunks
Lichen is a combination of fungus and algae. It grows on tree trunks.
The Union soldiers would heat up rail road ties and then bend them around tree trunks. They were nicknamed "Sherman's neckties".
Algae or mosses live on tree trunks.
Woodpeckers tap on tree trunks. They are looking for insects to eat when they do this. Woodpeckers have a red head.
Tree trunks are straight and branchless in their lower parts in their efforts to grow tall.
None.
A woodpecker, when trying to get bugs in a tree, uses its sharp beak to "drill" a hole in the tree, making loud tapping noises, hence the name "woodpecker"
The tree trunks are cylindrical because they grow from the center and outwards. They grow uniformly and this is evident from the rings when the trees are cut.