What Are The Structures That Are Exchanged During Mating In An Earthworm?
What Are The Structures That Are Exchanged During Mating In An Earthworm? During mating, two worms line up inverted from each other so sperm can be exchanged. The earthworms each have two male openings and two sperm receptacles, which take in the sperm from another mate. The earthworms have a pair of ovaries that produce