(A) In monocot roots like maize,the number of xylem bundles is usually more than six,which is typically referred to as polyarch condition.In contrast,

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(A) In monocot roots like maize,the number of xylem bundles is usually more than six,which is typically referred to as polyarch condition.In contrast,dicot roots generally exhibit diarch,triarch,or tetrarch conditions.Therefore,based on the number of xylem bundles,the maize root is termed as polyarch.