What fruit has seeds on it's outside ?

strawberry

Strawberries are the only fruit with seeds on the outside.

Hmmm. I could have sworn that raspberries, black-berries, lingonberries and marionberries also have seeds on the outside.

Catty (who has eaten enough seeds to grow an arboretum)

Jersey, can you tell me where you discovered that little fact?

Catty (who as usual believes she's right)

Hi Catty, The strawberry is not a berry, it's considered a fruit.

http://www.flynn-produce.com/aboutjune2000.htm

Technically, the strawberry is not a fruit with its seeds on the outside. A fruit is the ripened ovary of a flowering plant that contains a seed. And the fruit of the strawberry, called an achene, are those little structures that most people mistakenly call seeds. The large red fleshy body of the strawberry that we all prize is no more than a receptacle for the strawberry's many fruits. So technically there is NO fruit that has its seeds on the outside. That we choose to call the whole structure, receptacle and its fruits, a fruit is technically a misnomer. And JT, you are correct that the strawberry is not a berry; and in a non-technical sense for classification purposes it is considered a fruit, a form botanists have designated as an aggregate. In this case botanists have two different meanings for the word "fruit."