MediumZoologyAnimal Kingdom
+4 / -1
Flame cells (Protonephridia) are the excretory structures in:
A
Aschelminthes
B
Platyhelminthes
C
Annelida
D
Arthropoda
Explanation
Flatworms (Platyhelminthes) use specialized flame cells for osmoregulation and excretion.
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