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An organised and differentiated cellular structure having cytoplasm but no nucleus is

1. Vessels
2. Xylem parenchyma
3. Sieve tubes
4. Tracheids

Correct answer: Sieve tubes

Solution

Sieve tubes are living phloem cells with cytoplasm, but their nucleus degenerates as they mature. They are specialized for transport, making them an organised and differentiated cellular structure without a nucleus.

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