About the CnidariaCnidaria is one of the more primitive animal phyla. It includes aquatic organisms such as jellyfish, sea anemones, corals, and hydras. Most cnidarians are marine, although a few, such as the well-known hydra, are freshwater species.
Characteristics of Cnidaria:- 1)Radially Symmetrical. 2)Body multicellular, few tissues, some organelles. 3)Body contains an internal cavity and a mouth. 4)Two different forms exist, medusa and polyp 5)Reproduction is asexual or sexual. 6)Has a simple net like nervous system. 7)Has a distinct larval stage which is planktonic. 8)Lives in aquatic environments, mostly marine. 9)Mostly carnivorous otherwise filter feeders. 10)May have a minimal skeleton of chiton or calcium carbonate |
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