You drive a nail into a tree that is 10 feet tall, so that 5 inches of the nail are showing. You come back 10 years later. The tree is now 30 feet tall and only 3 inches of the nail are showing. This is because the tree grows out from
A. the lateral meristem only.
B. the apical meristem only.
C. both the lateral and apical meristems.
D. the root tip.
E. the node.
Ans: A. the lateral meristem only.
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