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 [...]
In this article we will discuss about of Polygordius:- 1. External Structures of Polygordius 2. Body Wall and Coelom of Polygordius 3. Digestive System 4. Circulatory System 5. Excretory System 6. Nervous System 7. Reproductive System. External Structures of Polygordius: The body of polygordius is slender, elongated, cylindrical and measures about 2-10 cm in length (Fig. 17.41). The segmentations are [...]
In this article we will discuss about Phylum Mollusca:- 1. Definition of Phylum Mollusca 2. Habit and Habitat of Phylum Mollusca 3. Taxonomic Retrospect 4. Characteristic Features 5. Classification 6. Number and Size 7. Mantle and Mantle Cavity 8. Excretory System 9. Reproductive System 10. Development. Contents: Definition of Molluscs Habit and Habitat of Molluscs Taxonomic Retrospect of Molluscs Characteristic [...]