JAMB - Biology (2010 - No. 6)
Which of the following is true of the transverse section of a dicot stem?
the xylem is more interiorly located than the phloem
the cambium lies between the cortex and the vascular bundles
the vascular bundles are randomly scattered within the cortex
the epidemis is completely encircled by the cortex
Explanation
In the transverse section of a dicot stem, the xylem is located more interiorly (towards the center) than the phloem, which is found on the outer side of the vascular bundles. Dicot stems have vascular bundles arranged in a ring around the periphery of the stem. Within each vascular bundle, the xylem is located towards the center (interior) of the bundle, and the phloem is located towards the outside (exterior).
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