In this article we will discuss about the General Characters and Classification of Phylum Annelida. General Characteristics of Phylum Annelida: Some of the general characters of Phylum Annelida are listed below: 1. Habitat: Annelids occur in fresh water, sea water or moist soil. Some are free living, some are burrowing and a few are parasitic. 2. Metameric Segmentation: The annelids [...]
In this article we will discuss about Trochophore Larva:- 1. Historical Retrospect of Trochophore Larva 2. Structures of the Trochophore Larva 3. Biology and Metamorphosis 4. Structures 5. Affinities 6. Phylogenetic Significance. Historical Retrospect of Trochophore Larva: 1. Loven (1840), a Swedish naturalist, was the first man who discovered trochophore larva. Since then the larva was known as Loven's larva. [...]
In this article we will discuss about Nereis Dumerilii:- 1. External Structures of Nereis Dumerilii 2. Body Wall of Nereis Dumerilii 3. Body Cavity or Coelom 4. Digestive System 5. Respiratory System 6. Circulatory System 7. Excretory System 8. Nervous System 9. Reproductive System. Contents: External Structures of Nereis Dumerilii Body Wall of Nereis Dumerilii Body Cavity or Coelom of [...]