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Large vegetable whose root system and aboveground part are well developed; it produces oxygen and provides wood.
structure of a tree
The tree is composed of an underground part, the roots, and two aboveground parts, the trunk and the crown.
cross section of a trunk
Moving from the center to the periphery there are six parts: the pith, the heartwood, the sapwood, the cambium, the phloem and the bark.
Lower part of the trunk that remains in place, with its roots, when the tree is cut down.