Which o the following is not a modified stem?
a) ginger
b) potato
c) corm
d) onion
State your choice with reason.

Dear Student.
Please find below the solution to the asked query.

The correct answer is Onion.
Onion is a modified leaf, the bulb of onion is a modified stem. Rhizome, tuber, bulb and corm are four modified stems. The layers of onion are modified leaves surrounding a modified stem.

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Onion is not a modified stem. It is a modified root as Onion is observed to have root hairs on its surface.
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onion is the right answer
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