NEET 2010 Biology question

The chief water conducting elements of xylem in gymnosperms are

(1)Fibres
(2)Transfusion tissue
(3)TracheidsCorrect
(4)Vessels

Answer: (3)

Solution

In gymnosperms the xylem lacks vessels (which occur in angiosperms) and consists mainly of tracheids, long dead cells with lignified walls and bordered pits, that conduct water. So (3) is correct. Fibres (1) give mechanical

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Question ID VK-090618