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Question

When formation of metaxylem is in a centripetal manner, the xylem is

A
Endarch
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B
Exarch
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C
Mesarch
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D
Radial
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Solution

The correct option is A Exarch
Differentiate between Exarch xylem and endarch xyl class 11 biology CBSE
  • When the xylem develops from the outside inwards towards the center, i.e., centripetally, it is called an exarch. Mainly in roots, the protoxylem lies towards the periphery and the metaxylem lies towards the centre.
  • When the xylem develops from the inside outwards towards the periphery, i.e., centrifugally, it is called endarch.
So, the correct answer is 'Exarch'.

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