Cross section of a tree trunk and stump: trunk: part of the tree, between the roots and the branches, consisting of wood on the interior and bark on the exterior. Stump: the remainder of the turnk including the roots after the tree is felled.
Stump: the remainder of the turnk including the roots after the tree is felled.
Wood (xylem): plant substance creating wood.
Sapwood: most recent annual rings of a tree.
Cambium layer: growth area of a tree.
Heartwood: wood surrounding the core of the trunk.
Pith: central part of the trunk.
Growth rings: marks indicating the yearly growth of the trunk.
Bark: protective outside covering of the trunk.

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Photo :

Small remaining portion of the trunk with the roots still in the ground.

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