Question

Exarch and tetrarch xylem are feature of ------
dicot system
dicot leaf
monocot root
divorced root ​

Answer 1

Answer:

dicot leaf is the answer

Explanation:

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Answer 2

Answer:

Correct option is

C

Monocot root

Vascular bundles in monocot root are radial in arrangement. There are eight bundles each of xylem and phloem. Hence, the condition is described as polyarch. Xylem is described as exarch

In monocot stem, xylem is described as endarch and presence of only two protoxylem and two metaxylem vessels in each bundle. So, it is not polyarch.  

In dicot root, vascular bundles are described as radial and tetrarch. There are four bundles each of xylem and phloem occurring alternately. Xylem is described as exarch

Dicot stem vascular bundles are eight in number, arranged in form of a broken ring. The vascular bundles are conjoint, collateral and open. Xylem is on the inner surface and phloem on the outer surface. Xylem is described as endarch

So, the correct answer is 'Monocot root'

Explanation: