What is inside a plant ovary?

The ovary is one of the structural units from a gynoecium (female reproductive part of plant). The gynoecium is composed of carpels which consists of 3 parts - a style, stigma and ovary.

The ovary contains a cavity that surrounds the ovules, containing female egg cells. Each ovule is connected to a placenta (lines the inside of the ovary). After fertilization, the ovules develop into seeds, causing the carpels to turn into fruit.