Earthworm Testes and Ovaries | Evident Scientific

Earthworm Testes and Ovaries

Earthworms, commonly known as night crawlers, are simultaneous hermaphrodites, with each worm having complete male and female reproductive systems that include both testes and ovaries. The photomicrograph above is a phase contrast image of earthworm reproductive tissue stained with a mixture of eosin and hematoxylin.