PHYLUM CNIDARIAN. Outline. Classification Characteristics Reproduction Description of the 4 classes Current experimentation Distribution Fossil records. Classification. Cnidarian - (Gr. Knide , nettle, + L. aria [pl. suffix] like or connected with).
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Cnidarian - (Gr. Knide, nettle, + L. aria [pl. suffix] like or connected with)
(Gr. Koilos, hollow, + enteron, gut, + L. ata [pl. suffix]
Class Scyphozoan(Gr. Skyphos, cup)“The true jellyfish,” can be characterized by a thick, jelly like bell made up of mesoglea and 95% to 96% water. Their entire body is covered with nematocysts, which packs a painful sting. Oral arms are their primary source for feeding and ingestion. Reproduction is sexual.
Class Hydrozoa(Gr. Hydra, water serpent, + zoon, animal)Mainly marine and live colonial. Consist of an epidermis, gastrodermis, and mesoglea. Hydras use a basal disc for movement and secrete mucous for assistance. The hydra relies on tentacles for feeding and digestion. They reproduce asexually (budding) and sexually, usually in Autumn.
Class Anthazoan(Gr. Anthos, flower, + zoon, animal).Only exist in the polyp form.Can live solitary as anemones or in colonies, such as corals. Possess a gastro vascular cavity subdivided by septa bearing nematocysts. Reproduction through separate sexes or asexually by budding, but commonly pedal laceration
Class Cubozoa(Gr. Kybos, a cube + zoon, animal).Size range up to 25 cm tall, but are usually 2 to 3 cm. The transverse of the bell appears square in these animals. On the corners of the bell are tentacles these help in moving and feeding. Reproduce by asexual budding.
Fungiid Coral from Indonesia
Figure 1a. Distribution map of 60 species of Chilean sea anemones according to the literature. The two species with doubtful classification and the species without location are not shown in the distribution map. p: type localities; D: type locality of synonymous species; : other collection sites; collection sites are connected by lines for greater clarity. NPZ: North Patagonian Zone, CPZ: Central Patagonian Zone, SPZ: South Patagonian Zone.