The center of a daisy is called the flower head or floral disc. Though it looks like one piece, the flower head is composed of several small disk flowers colored yellow, surrounded by long white ray flowers.
Each disk flower is a single flower composed of an ovary, carpel and stamen. Each carpel contains one or more ovaries, which house the female reproductive components of the daisy. The stamen are the male parts of the daisy and produce the pollen that fertilizes the female parts.
The entire flower that is known as a daisy is a collection of disk flowers and ray flowers that are secured by a base called a peduncle. The peduncle forms from the stem of the daisy plant and holds all of the composite flowers together.