Choose the correct one with respect to sunflower root.

Difficult

A

It has four groups of xylems and four groups of phloem in eight different radii.
B

It has four groups of xylems and four groups of phloem in only four different radii
C

It has two groups of xylems and two groups of phloem in four different radii.
D

It has 10 groups of xylems and ten groups of phloem in twenty different radii.

Solution

Sunflower is a dicot and its roots show tetrarch condition. It means that its xylem has four radial arms and in between which phloem bundles are present in four radial rows. The vascular bundles are radial separate and exarch.

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