Exarch and polyarch vascular bundles occur in

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(B) In plants,vascular bundles are classified based on the position of protoxylem and the number of xylem bundles.$Exarch$ condition refers to the arr

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Monocot root

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(B) In plants,vascular bundles are classified based on the position of protoxylem and the number of xylem bundles.$Exarch$ condition refers to the arrangement where protoxylem lies towards the periphery and metaxylem towards the center,which is a characteristic feature of roots.$Polyarch$ condition refers to the presence of more than six xylem bundles.Monocot roots typically exhibit a $polyarch$ arrangement (usually more than six xylem bundles) and $exarch$ xylem.Therefore,$exarch$ and $polyarch$ vascular bundles are characteristic of monocot roots.

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