Nephridia are excretory structures in certain animals that function like kidneys, such as earthworms having them on each body segment.
Nephridia are excretory structures found in animals such as earthworms, arthropods, and mollusks. They function similar to kidneys and help remove waste products from the body.
For example, earthworms have a pair of nephridia on each body segment that filter fluids through ciliated tubules, reabsorb useful waste products, and eliminate waste through nephridiopores.
These structures are more evolved than flame cells and play a crucial role in maintaining the internal environment of these invertebrate organisms.
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