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Question

The unit of inflorescence in grasses or Gramineae (Poaceae) is

A
Thysis
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B
Spike
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C
Spikelet
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D
Raceme
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Solution

The correct option is A Spikelet
Spikelet or compound inflorescence has peduncle branching repeatedly once or twice and the ultimate branches bear flowers in a raceme or cymose manner. Spikelet is a compact spike having a few flowers borne on an axis called as rachilla and surrounded by two bracts called as glumes, e.g., Wheat, oat, grass.

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