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Question

Lysigenous cavity in monocot stem vascular bundles develops by the dissolution of

A
protoxylem
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B
metaxylem
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C
phloem
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D
ground tissue
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Solution

The correct option is A protoxylem
In monocot stem (Maize), the xylem appears Y shaped. The lowermost or innermost protoxylem undergoes disintegration to produce lysigenous cavities also called the protoxylem lacuna.
So, the correct answer is 'protoxylem'

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