How is a fruit formed?

A fruit is the plant equivalent of the human womb. When a flower is pollinated the fruit starts to form around it and may perform several purposes such as feeding the growing embryo inside (the seed), protecting it from harm, helping it to travel by air or water, drawing a herbivore which may carry the seed elsewhere after it has eaten the fruit. In that sense from an evolutionary point of view cultivated crops have used humans to spread them all over the world...