WebJun 3, 2014 · Of earthworms and flatworms Everyone knows the myth about earthworms: if you cut them in half, you get two worms. Nothing could be further from the truth, alas. However, if the earthworm is … WebSep 29, 2009 · The flat worm does not help to control other pest populations as most worms do. They actually kill and eat earthworms, exclusively. The flat worm is considered a …

Superphylum Lophotrochozoa: Flatworms, Rotifers, …

WebFlatworm definition, any worm of the phylum Platyhelminthes, having bilateral symmetry and a soft, solid, usually flattened body, including the planarians, tapeworms, and … WebThe flatworms are acoelomate organisms that include many free-living and parasitic forms. The flatworms possess neither a lophophore nor trochophore larvae, although the larvae of one group of flatworms, the … longmont to fort collins colorado

15.3 Flatworms, Nematodes, and Arthropods - OpenStax

WebDec 8, 2024 · Terrestrial flatworms vary in size, from just a few millimeters to over one foot (12”) long. Although they can stretch and contract easily, they come in a few general shapes. Some are wider in the middle and leaf-like, with pointed ends, while others are thin and elongate with a distinct crescent-shaped “hammerhead”. WebReproduction. With very few exceptions, platyhelminthes are hermaphroditic, and their reproductive systems are generally complex. Numerous testes but only one or two ovaries are usually present in these flatworms. The female system is unusual in that it is separated into two structures: the ovaries and the vitellaria, often known as the ... WebFigure 22.10. In the excretory system of the (a) planaria, cilia of flame cells propel waste through a tubule formed by a tube cell. Tubules are connected into branched structures that lead to pores located all along the sides of the body. The filtrate is secreted through these pores. In (b) annelids such as earthworms, nephridia filter fluid ... longmont to fort collins