Plant Parts Flowers not only look pretty but, in fact, are important in making of seeds. Flowers have some basic parts. The female part is the pistil. The pistil usually is located in the center of the flower and is made up of of three parts: the stigma, style, and ovary. The stigma is the sticky knob at the top of the pistil. It is attached to the long, tubelike structure called the style. The style leads to the ovary which contains the female egg cells called ovules. The male parts are called stamens and usually surround the pistil. The stamen is made up of two parts: the anther and filament. The anther produces pollen (male sperm cells). The filament holds the anther up. During the process of fertilization, pollen lands on the stigma, a tube grows down the style and enters the ovary. Male sperm cells travel down the tube and join with the ovule, fertilizing it. The fertilized ovule becomes the seed, and the ovary becomes the fruit. Petals are also important parts of the flower because they help attract pollinators such as bees, butterflies and bats. You can also see tiny green leaf-like parts called sepals at the base of the flower. They help to protect the developing bud. Insects and other animals help some flowers become pollinated.