The types of fruits are categorized into berries, melons, citrus, nuts, and drupes.

1, berry, is developed by the ovary or unite other flower organs into a soft and juicy fleshy fruit. There are many types of berry fruit trees, such as grapes, kiwifruit, raspberries, currants, lingonberries, fruit mulberry, figs, pomegranates, poppies, heart fruit, papaya, guava, pawpaw, blueberries, passionfruit and so on.

2, melon and fruit: melon and fruit. Also refers to fruit in general. Rind in the old ripe to form a hard shell, endocarpitis pulp, such as watermelon, cantaloupe, etc..

3, citrus: a genus of Rutaceae. Often called citrus. The main feature is that the berry has a special structure, it is also known as citrus fruit, the outer pericarp of the oil point is also known as the oil cell, the innermost layer of the mesocarp for the white line of reticulation structure, known as the orange white or orange complex, the endocarp is composed of a number of cardiac by the development of the maturation of the heart and is known as the scoop capsule. Such as: Yichang orange, lemon, citron, grapefruit, sweet orange, lemon and come lemon.

4, nuts: a classification of closed fruit, hard pericarp, containing one or more seeds. Such as chestnuts, almonds and other fruits.

5, the drupe: is formed by a single carpel pistil, the upper part of the ovary formation of the fruit, but also by the combined carpel pistil or the lower part of the ovary formation. Its exocarp is thin, mesocarp fleshy, endocarp hard and woody, forming a hard kernel, each kernel contains 1 seed, such as peach, apricot, walnut, etc.

Baidu Encyclopedia - Berry

Baidu Encyclopedia - Citrus genus

Baidu Encyclopedia - Drupe