PART - 1 - Unit II : CH - 5 Morphology of Flowering Plants — BIOLOGY STD 11 Science — Question

A flower is a modified shoot wherein the shoot apical meristem changes to floral meristem. Internodes do not elongate and the axis gets condensed. The apex pro-duces different kinds of floral appendages laterally at suc-cessive nodes instead of leaves. When a shoot tip transforms into a flower, it is always solitary. The arrangement of flow-ers on the floral axis is termed as inflorescence. Depending on whether the apex gets developed into a flower or contin-ues to grow, two major types of inflorescences are defined -racemose and cymose. In racemose type of inflorescences the main axis continues to grow, the flowers are borne later-ally in an acropetal succession. In cymose type of inflores-cence the main axis terminates in a flower, hence is limited in growth. The flowers are borne in a basipetal order .