A) Planaria
B) Hydra
C) Hydrilla
D) Cockroach
Correct Answer: A
Solution :
Flame cells has two distinct part: The main irregulary avoid and uninucleate "cell body" or flame bulb. An elongated, narrow and hollow tube like part. Flame cells are excretory organs of members or phylum-Platyhelminthes like Planaria. Fcisciola. Excretory organs of cockroach are Malpighian tubules. Hydra does not has special organ for excretion. So each cell has its independent excretion and this excretion takes place by simple diffusion.
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