Question

How many types of nephridia are found in earthworm based on their location?

Answer 1

3 types of nephridia

• Septal nephridia: present on both sides of intersegmental septa of segment 15 to the last that open into intestine.
• Integumentary nephridia: attached to lining of the body wall of segment 3 to the last that open on the body surface.
• Pharyngeal nephridia: present as three paired tufts in the 4th, 5th and 6th segments.