Contractile vacuole is found in Amoeba (A-II); Water vascular system is found in Asterias, a starfish (B-I); Canal system is found in Spongilla, a sponge (C-III); Flame cells are found in Taenia, a tapeworm (D-IV).
ConceptStructures and their representative organisms
Animal Kingdom in past papers
123 questions from this chapter have appeared across 27 exam years.