In this article we will discuss about the General Characters and Classification of Phylum Cnidaria. General Characteristics of Phylum Cnidaria: Some of the important General Characters of Phylum Cnidaria are listed below: 1. Habitat: All are aquatic and are mostly marine, except a few like Hydra, are fresh water. 2. Body Form: Body form varies considerably. Many colonial cnidarians like [...]
In this article we will discuss about the meaning and classification of phylum cnidaria. Meaning of Phylum Cnidaria: The phylum Cnidaria (coel=hollow; enter on—gut) includes the simplest of the cellular animals or xnetazoa. The coelenterate body is a two-layered sac, opening to the exterior by a single aperture called mouth. The mouth is surrounded by a number of tentacles and [...]
Learn about the comparison between Aurela and Urticina. Comparison # Aurelia: 1. Aurelia is elongated tube-like body with narrow proximal end differentiated into stalk for attachment. 2. Aurelia is about 1.5 cm in height. 3. Distal tentacle: 16 solid tentacles developed in regular order (4 per-radial, 4 inter-radial and 8 ad-radial tentacles). 4. Manubrium is present in Aurelia. 5. Mouth [...]