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An oranised and differentiated cellular structure having cytoplasm but no nucleus isA. vesselsB. xylem parenchymaC. sieve tubesD. tracheids

Answer» Correct Answer - c
Sieve tubes are food conducting elements of phloem They possess nucleus in the young stage but disappers in mature ones . The central part of sieve tube has an organised and differentiated cellular structure with a network of cytoplasmic strands , though the perpheral cytoplasm is thin and tonoplast is absent.


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