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Leaf

Position of p...

Question

Position of protoxylem and protophloem in leaf respectively is

A

Abaxial and Adaxial

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B

Adaxial and Abaxial

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C

Adaxial on both surfaces

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D

Abaxial on both surfaces

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Solution

The correct option is B Adaxial and Abaxial
Protoxylem is the first formed xylem and protophloem is the first formed phloem.
Adaxial is the upper surface whereas abaxial is the lower surface.
In a leaf, protoxylem is present on the upper side and protophloem is present on the lower side in a vascular bundle.
Hence, position of protoxylem is adaxial and position of protophloem is abaxial. So, the correct answer is 'Adaxial ad Abaxial'.

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