Inflorescence of onion is
A. Solitary terminal
B. Umbellate cyme
C. Raceme
D. Solitary axillary

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Detailed Solution

Inflorescence refers to the arrangement of flowers on a stem or its branches. Broadly, there are five main types: solitary, racemose, cymose, mixed, and special inflorescence.

Option A: Solitary Terminal – This is a subdivision of solitary inflorescence where a single flower appears at the tip of the main stem or branch. Example: Poppy.
Option B: Umbellate Cyme – This belongs to mixed inflorescence. Here, the central flower develops first and is followed by umbellate branching. It begins as a dichasium, later turning into monochasia. Example: Onion.
Option C: Raceme – In this type, the main axis continues to grow indefinitely without ending in a flower, while flowers develop laterally.
Option D: Solitary Axillary – Another subdivision of solitary inflorescence, where single flowers arise in the leaf axils. Examples: Petunia, Garden Nasturtium, Shoe Flower.

Hence, the correct answer is Option B: Umbellate Cyme.

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