Details:
The arrangement of flowers on the floral axis is termed as inflorescence. The axis of inflorescence is called peduncle. These are of basically four main types:
Ref: https://www.cbsetuts.com/neet-biology-notes-morphology-flowering-plants-inflorescence/
Have you noticed the petals arrangements in many flowers look like the wheels of a bicycle? Here is an easy trick to remember inflorescence in flowering plants:
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