Learn about segmented worms, also called annelids, and about Annelida reproduction. Understand the different types of asexual and sexual reproduction in animals.

Learn about planarian worms. Discover planaria classification, including phylum. Review information about planaria reproduction, anatomy, and regeneration.

Learn about class Cestoda, the tapeworm class. Discover the tapeworm life cycle, lifespan, and tapeworm reproduction. Explore their bodies with a...

Flatworms do not have a traditional reproductive system with ovaries, a uterus, testes, and ducts to deliver the sperm to the egg. When they reproduce sexually they can fertilize other …

This lesson explores earthworm anatomy and describes how several systems work, including the digestive system and reproduction system.

Explore the worlds of both sexual reproduction in starfish and the fascinating asexual methods of reproduction in starfish, like fissiparity and autonomy.

Roundworms reproduce sexually requiring both a female and male roundworm for reproduction to occur. When fertilization takes place, many eggs by as... See full answer below.

Flatworms reproduce sexually, but most species hermaphroditic meaning they contain both eggs and sperm in the same body and therefore do not need to find a mate.

Learn about invertebrates through the definition of the classification and examples of invertebrates. Discover different types of invertebrates and see pictures of invertebrates.

Learn the difference between the three types of parasitic helminths: nematodes, cestodes, and trematodes, how they reproduce, and how someone becomes infected.