Which is not a common feature in vessel elements and sieve tube elements ?
A
Enucleate condition
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B
Presence of P-protein
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C
Thick secondary wall
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D
Pores on lateral walls
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Solution
The correct option is A Enucleate condition Phloem is a vascular tissue and its principal function is the conduction of food. It is composed of the sieve elements, of which two types can be distinguished, sieve cells and sieve-tube members. The vessels are nucleated whereas the sieve tube elements are enucleated.