A fruit that forms from a single ovary in a single flower is called a simple fruit. In contrast, some flowers have multiple, separate pistils each with a separate ovary. A fruit that develops from this type of flower is called an aggregate fruit . A strawberry is good example. A multiple fruit formed from many flowers, each with a separate ovary.
Pineapples are good examples.
Fleshy vs. dry. Fruits can be fleshy or dry. As a generalization, fruits that we eat are fleshy, while plants with dry fruits are grown to provide us with seeds. Dehiscent vs. indehiscent. As a generalization, edible fruits are usually indehiscent while those that supply seeds are dehiscent.