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Question

Vascular bundles in dicot stem are

A
Open, collateral, endarch
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B
Closed, collateral, endarch
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C
Open, collateral, exarch
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D
Closed, collateral, exarch
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Solution

The correct option is A Open, collateral, endarch
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.
Exarch xylem is present in roots.
Closed vascular bundles are present in monocots. Thus, option A is correct.

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