First slide

Anatomy of Dicotyledonous and Monocotyledonous Plants

Question

In a sunflower root xylem and phloem are arranged in a total of

Easy

A

four different radial rows
B

eight different radial rows.
C

two different radial rows
D

Six different radial rows

Solution

Roots of sunflower show tetrarch condition which implies that there four radial patches of xylem alternating with four radial groups of phloem. i.e. a total of eight radial rows. Monarch condition shows one parch each of xylem and phloem, Diarch condition two phloem and xylem patches and Triarch condition three phloem and xylem patches.

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