Assertion : Vessels are more efficient for water conduction as compared to tracheids. Reason : Vesse

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6.Anatomy of Flowering Plants

hard

Assertion : Vessels are more efficient for water conduction as compared to tracheids.
Reason : Vessels are dead lignified

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

If the Assertion is correct but Reason is incorrect.

If both the Assertion and Reason are incorrect.

(AIIMS-2010)

Solution

Vessels are more efficient for water conduction as compared to tracheids. Vessels resemble tracheids very much in structure and function. But unlike tracheids these are like long tubes arranged in vertical row formed of cylindrical cells arranged to end with their end walls completely dissolved. These are also dead and lignified.

Standard 11

Biology