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A common structural feature of vessel elements and sieve tube elements are

A. pores on lateral walls.

B. presence of p-protein.

C. enucleate condition.

D. thick secondary walls.

Correct Answer : C.


In plant conducting tissue xylem has an important integral cell as xylem vessel which is without nucleus. The phloem on other hand has a row of sieve tubes which are also without nucleus at maturity.

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