In this article we will discuss about Neanthes Virens:- 1. Habit, Habitat and Distribution of Neanthes Virens 2. External Features of Neanthes Virens 3. Locomotion 4. Body Wall 5. Coelom 6. Digestive System 7. Respiration 8. Blood Vascular System 9. Excretory System 10. Nervous System 11. Sense Organs 12. Reproductive System and Others. Contents: Habit, Habitat and Distribution of Neanthes [...]
Pheretima: Habit and Habitat and External Features ! Habit and Habitat of Earthworms: The earthworms are burrowers. They are found in the soil rich in decaying organic matters usually in gardens, pastures, lawns, irrigated farm lands, near the banks of the ponds, lakes and rivers. The do not prefer to live in sandy, clay and acid soils which are deficient [...]
Excretory System of Nephridia (Earthworm)! These are of three types according to their location in the body: 1. Septal nephridia; 2. Integumentary nephridia 3. Pharyngeal nephridia. 1. Septal Nephridia: These are found situated on the inter-segmental septum between 15th and 16th segments to the posterior side of the body. Each septum bears nephridia on both the surfaces arranged in semicircles [...]