A) gills of prawn
B) trachea of insects
C) nematoblasts of Hydra
D) flame cells of Planaria
Correct Answer: D
Solution :
The analogous organs are those structures which are different in their basic structure and developmental origin but appear similar and perform similar function. So nepheridia of earthworm is analogous to flame cells of Planaria because both are analogous and perform excretory function.
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