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 [...]
In this article we will discuss about Polymorphism in Cnidarians:- 1. Definition of Polymorphism 2. Causes of Polymorphism 3. Basic Units 4. Origin 5. Significance. Definition of Polymorphism: Polymorphism may be defined as the "phenomenon of existence of different physiological and morphological forms represented by an extensive range of variation within a single species". It may be defined in another [...]
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 [...]