In this article we will discuss about Sea Anemone:- 1. Habit and Habitat of Sea Anemone 2. Structure of Sea Anemone 3. Nutrition 4. Histology 5. Nervous System 6. Reproduction 7. Development. Contents: Habit and Habitat of Sea Anemone Structure of Sea Anemone Nutrition in Sea Anemone Histology of Sea Anemone Nervous System of Sea Anemone Reproduction in Sea Anemone [...]
The relationship between metagenesis and polymorphism has raised the question—is metagenesis an outcome of polymorphism or has it lead to the emergence of polymorphism? A discussion on the existence of different grades of metagenesis in cnidarians will help us to find a logical answer. Gradations of Metagenesis: Four different forms of life-histories are seen in the cnidarians which exhibit a [...]
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 [...]