Protonephridia are the main excretory structures in

Question

Protonephridia are the main excretory structures in (A) Cnidarians (B) Aschelminthes (C) Molluscs (D) Platyhelminthes

Tardigrade Admin · Accepted Answer

Protonephridia are also called flame cells in flatworms

Q. Protonephridia are the main excretory structures in