A flower is a specialized condensed shoot of an angiospermous plant in which the shoot apical meristem gets transformed into floral meristem for carrying out sexual reproduction through the progressive specialization of leaves into floral appendages. A flower, also known as a bloom or blossom, is the reproductive structure found in flowering plants. Flowers can be made up of different parts, but some parts are basic equipment. The main flower parts are the male part called the stamen, and the female part called the pistil. The stamen has two parts: anthers and filaments. The anthers carry the pollen. The flower is formed to begin the process of reproduction. The female parts will create an ovule or unfertilized egg. The egg (or eggs) will remain in the ovary and wait to be fertilized. The male parts (in particular, the anther) will produce pollen, which contains the sperm needed to fertilize the egg.