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BIOLOGY

JAMB 2014 - Question 13

Biology 2014 JAMB Past Questions - Question 13: The diagram is the transverse section of a

use the diagram below to answer the questions 12 and 13

The diagram is the transverse section of a

A: Monocotyledonous stem.

B: Dicotyledonous stem.

C: Monocotyledonous root

D: Dicotyledonous root

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Correct Answer

Explanation

It lacks central pith. The xylem and phloem lie on different radii and alternating with each other. The outermost covering of the diagram is the poriferous layer. The xylem and phloem tissue do not occur in the same vascular bundle as showing dicotyledonous and monocotyledonous stem. Monocotyledonous root has large central pith surrounded with ring of alternating xylem and phloem.