alleryProtonephridia (flame cells) are the excretory structures of
AEarthworms and other annelids
BPlatyhelminthes, rotifers and Amphioxus
CInsects including cockroaches
DCrustaceans like prawns and crabs
Answer & Solution
Correct answer: B. Platyhelminthes, rotifers and Amphioxus
Protonephridia are flame-cell-based excretory structures of flatworms (Platyhelminthes), rotifers, some annelids and the cephalochordate Amphioxus.
They focus on osmoregulation more than nitrogen excretion.
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