All the following are true of companion cells EXCEPT that they
A) are connected to sieve- tube elements via plasmodesmata.
B) cooperate with sieve- tube elements in conducting sugar- rich solutions.
C) fuse together to form the sieve plates of sieve- tube elements.
D) supply materials to repair the plasma membrane of sieve- tube elements.
E) provide proteins and ATP to sieve- tube elements.
Correct Answer:
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