Explanation:
(b) In racemose inflorescence, the main axis continues to grow. The flowers are borne laterally in an acropetal succession, which means the older flowers are at the base and younger flowers are near the apex. E.g., radish, mustard, Amaranthus.
In cymose inflorescence, the axis terminates in a flower, hence, is limited in growth. The flowers are borne in a basipetal order, which means older flowers are at the apex and younger flowers are near the base. E.g. cotton, jasmine, Calotropis.