Assertion :Xylem vessel is a long cylindrical tube like-structure made up of many cells each with lignified walls Reason: Presence of vessels is a characteristic feature of gymnosperms

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
The xylem vessel designates a long tube consisting of a series of drum- shaped cells placed one above the other with their end walls perforated or dissolved. The vessels are thus, syncytes and form long tube. It is found mainly in angiosperms. They occur in few gymnosperms(e.g. Gnetales).
So, the correct answer is 'Assertion is correct but reason is incorrect'.

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