Suppose George Washington completely removed the bark from around the base of a cherry tree but was stopped by his father before cutting the tree down. The leaves retained their normal appearance for several weeks, but the tree eventually died. The tissue(s) that George left functional was/were the
A) phloem.
B) xylem.
C) cork cambium.
D) cortex.
E) companion and sieve-tube members.
Answer: B
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