A simple fruit is a fruit that develops from a single flower with one ovary or multiple fused carpels. The ovary wall ripens into a single fruit, separate from other ovaries.E.g Apples, Oranges, peaches, Lemon, melon etc

A multiple fruit is a type of fruit that develops from the ovaries of many flowers growing in a cluster or that are fused together into a larger fruit. E.g Pineapple

A fruit that develops from a single flower with multiple carpels is called an aggregate fruit. Examples include Raspberry, strawberry, and Blackberry.

A false fruit is a fruit that develops from parts of a flower other than the ovary. False fruits are also known as pseudo fruits or accessory fruits.E.g Pear, Cashew