Technically, the true fruit is always the ripened ovary of a flower, but sometimes other structures contribute to the overall fruit.
In a strawberry (Fragaria), there are many distinct carpels (an apocarpous gynoecium) on an elongated receptacle. Each of these carpels matures into a tiny dry, hard fruit (achene) that contains a single seed.
However, as the carpels are developing, the receptacle starts enlarging and becomes fleshy.
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