PARTS OF FRUITS

A fruit as a whole is not a single solid product; it is divided into certain parts among itself. Generally the parts of the fruits are divided into two fruit layers. They are,

Pericarp

Exocarp, the outermost layer often consisting of only the epidermis
Mesocarp, or middle layer, which varies in thickness
Endocarp, which shows considerable variation from one species to another

Seed

During the development of the fruit, the wall of the ovary, called per carp, usually thickens and becomes differentiated into three layers, which may or may not be easy to distinguish visually. These layers are called the Exocarp, Mesocarp, and endocarp. As an example, in the peach, the Exocarp is the skin, the Mesocarp is the fleshy part, and the endocarp is the stony pit. The seed, containing the embryo, is inside the pit.
.
Fruit matured ovary of the pistil of a flower, also containing the seed. After the egg nucleus, has been fertilized (see fertilization) and the actual embryo plantlet begins to form, the surrounding ovule (see pistil) develops into the seed and ovary wall (per cap) around the ovule forms the fruit. Per carp consists of three layers of tissue; the thin outer Exocarp, which becomes the “skin” the thicker Mesocarp; and the inner endocarp, immediately surrounding the ovule. A flower may have one or more simple pistils (each called a carpel); different arrangements give rise to different types of fruit. A new variety of fruit is obtained as a hybrid in plant breeding or may develop spontaneously by mutations.

Example to describe the parts of the fruits with Tomato Fruit.