All trees have fruit, if not seeds. You should be able to come up with a number of fruit and their trees: the apple and the apple tree; the pear and the pear tree; and the orange and the orange tree, to name just a few. The seeds are found inside the fruit. If you plant an apple seed, an apple tree will grow. If you plant an apple from which the seeds have been removed, nothing will grow. The important part is the seed. The seed contains all the genetic information needed to grow a tree.

The fruit develops once the flower has been fertilized by pollen. Each species of tree has its own kind of fruit, which ripens at different times of the year.