As compared to a dicot root,a monocot root ha | vedclass

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(B) : In monocot roots,secondary growth is absent,and the vascular cylinder consists of several alternate and radial xylem and phloem bundles. The vas

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many xylem bundles

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(B) : In monocot roots,secondary growth is absent,and the vascular cylinder consists of several alternate and radial xylem and phloem bundles. The vascular bundles are arranged in a ring around the central pith. Their number in maize ranges between $20-30$,whereas in Pandanus and palms,they may be up to $100$. Because of the presence of numerous xylem bundles and the exarch condition,the xylem of a monocot root is polyarch. On the other hand,in dicot roots,xylem and phloem are equal in number $(2-6)$ and are alternately arranged,i.e.,they lie on different radii,hence called radial bundles. Depending on the number of rays (equivalent to the number of xylem or phloem bundles),the roots may be diarch,triarch,tetrarch,pentarch,or hexarch.

As compared to a dicot root,a monocot root has

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