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B
well developed pith
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C
absence of secondary growth
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D
all of these
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Solution
The correct option is D all of these In monocot roots, the number of xylem and phloem bundles are polyarch (more than 6 vascular bundles) while in dicots, the number of vascular bundles usually varies from diarch to hexarch. Pith is large and well developed in monocot roots since no secondary growth takes place while it is small and inconspicuous in dicot root due to extensive secondary growth.