Functionwise, just as there are nephridia in an earthworm, so are
(a) parotid glands in toad
(b) statocysts in prawn
(c) flame cells in Iiver fluke
(d) myotomes in fish
Correct option (c) flame cells in Iiver fluke
Explanation:
Flame cells in liver fluke are excretory organs as nephridia in an earthworm.
