WebJan 28, 2024 · For some species of flatworm, mating involves a strange wrestling match. The flatworms rear up with their two-headed, dagger-like penises exposed and attempt to forcefully pierce each other's... WebCnidarians. The phylum Cnidaria includes animals that show radial or biradial symmetry and are diploblastic. Nearly all (about 99 percent) cnidarians are marine species. Cnidarians have specialized cells known as cnidocytes (“stinging cells”) containing organelles called nematocysts.These cells are concentrated around the mouth and tentacles of the animal …
Invertebrates Week 2 Worm Lab - Course Hero
WebLife Cycle: Flatworms are one of the first critters to hatch when the pools start filling with rainwater. The young hatch from eggs and look similar to the adults. When they are mature, flatworms mate and lay dark, round eggs. Most flatworms are hermaphroditic, meaning they are both male and female. Every flatworm can mate with any other ... WebThis way of mating is less costly than the more typical ways of reproduction. It takes less energy to inject sperm than it does to release eggs. Directly injecting sperm is a way for males to ensure that the sperm will actually … chitting cucumber seed
These Flatworms Can Regrow A Body From A …
WebFlatworms are hermaphroditic (having both male and female sex organs) and they typically reproduce both sexually and asexually. The majority of sexual reproduction is through … WebOct 8, 2024 · When planarian flatworms want to reproduce, some have sex. Others, more straightforwardly, tear themselves in two. The latter option is fast and violent. The … Webthey are stuck in body, but it still needs to mate (can still do with others) Why do some helminths have no gut/secondary simplification they live in our gut, so the food is already digested Describe flukes (3) (parasitic? sexual reproduction? digestive system?) some parasitic hermaphrodites gut: mouth = anus grass flower field