WebOct 1, 2024 · The Class Echinoidea contains some familiar marine creatures - sea urchins and sand dollars, along with heart urchins. These animals are echinoderms, so they are related to sea stars (starfish) and sea … WebMar 5, 2024 · Most species of annelids can reproduce both asexually and sexually. However, leeches can reproduce only sexually. Asexual reproduction may occur by budding or fission. Sexual reproduction varies by species. In some species, the same individual produces both sperm and eggs. But worms mate to exchange sperm, rather than self-fertilizing their own ...

28.5A: Phylum Echinodermata - Biology LibreTexts

WebJul 30, 2024 · Echinoderm reproduction is varied and often complex. Most echinoderms reproduce sexually, while a few species are known to reproduce asexually or through budding. Most specious are dioecious, or contain two distinct sexes, while other species are hermaphroditic and each individual carries both sexual organs. WebFeb 28, 2024 · Although all living echinoderms have a pentamerous (five-part) radial symmetry, an internal skeleton, and a water-vascular system derived from the coelom (central cavity), their general appearance … trick photography definition

Life History and Ecology of the Echinodermata

http://www.mesa.edu.au/echinoderms/echino01.asp Webthey have to reproduce sexually Echidna is a genus of mammals from Australia and New Guinea that lays eggs. Identify this group as oviparous, ovoviviparous, or viviparous. Why is this unusual? oviparous How are sponges different from other animals? they have no germ layers or body systems Webanimal a multicellular organism that is able to move to acquire other organisms for food, has a digestive system to break down food, and has sensory and nervous systems to detect and quickly respond to a stimulus asymmetry no symmetry bilateral symmetry the two mirror images that result in a cut down the center lengthwise of an organism or object trick photoshop