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Gymnosperms and Angiosperms

Assertion :In...

Question

Assertion :In gymnosperms, plants show well developed vessels and fibres Reason: Companion cells are absent in gymnosperm.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

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B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

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C

If the assertion is true but the reason is false

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D

If both the assertion and reason are false

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Solution

The correct option is B If both the assertion and reason are true but the reason is not a correct explanation of the assertion
In gymnosperms, xylem lacks true vessels and wood fibres. It consists of centroids that are arranged in uniform radial rows and xylem parenchyma only. The phloem contains sieve tubes and parenchyma cells. There are no companion cells. Hence both statements are true but the reason is not the explanation for the assertion.
Thus the correct option is B.

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