NEET 2006 Biology question

A common structural feature of vessel elements and sieve tube elements is-

(1)Thick secondary walls
(2)Pores on lateral wall
(3)Presence of p-protein
(4)Enucleate conditionCorrect

Answer: (4)

Solution

Mature vessel elements are dead cells without protoplast (hence without a nucleus), and mature sieve tube elements, though living, lose their nucleus during differentiation; so the common feature is the enucleate (anucleate) condition, option

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Question ID VK-089660