Evolution came up with sexual reproduction as a mechanism to keep the gene pool varied and varying. In this sense the female and male sexual organs constitute one single reproductive apparatus.

Another ingenious mechanism is the bee/flower or fly/flower or bat/flower, duos of completely separate species in beautiful, poetic symbiosis. Birds with seeds is another one.
The bees (or flies or bats) reproduce on their own, but the flower has turned those species into part of its’ own reproductive organs, in a way.