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Protoxylem is towards pith and metaxylem...

Protoxylem is towards pith and metaxylem is towards periphery in

A

(i) endarch xylem (ii) exarch xylem .

B

(i) exarch xylem (ii) endarch xylem

C

(i) diarch xylem (ii) polyarch xylem

D

(i) hexarch xylem (ii) tetrarch xylem

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A
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