Practice question

Racemose category encompasses simple raceme pedicellate flowers along elongated axis, spike sessile flowers directly on rachis, corymb with pedicels of different lengths bringing flowers to same level, umbel, spadix and capitulum as condensed racemose modifications. Cyme represents opposite cymose group where main axis terminates in flower, lateral branches sympodial. Therefore among raceme, spike, cyme, corymb, cyme is outlier belonging to determinate class. Morphologically racemose shows acropetal succession younger apex, cyme basipetal younger base, reflecting contrasting meristem fate deterministic for inflorescence architecture and evolutionary trends across angiosperms.