Function of earthworm testes?

Question

Function of earthworm testes?

Answer 1

To determine if they pass the class.

Since earthworms are not too bright the teacher has to give them multiple choice testes.

Answer 2

Check with Biology. Unless it were fossilized, we wouldn't be interested.

Answer 3

I would think the same function as all testes: Production and storage of the male gametes.

But I don't look under worms often.