Option (2) is the answer as it represents the correct match.
- Contractile vacuole is present in Amoeba and helps in osmoregulation.
- Water vascular system is the most distinctive feature of echinoderms such as Asterias, Echinus etc.
- Sponges have water transport or canal system in Spongilla.
Platyhelminthes like Taenia have specialised cells called flame cells that helps in osmoregulation and excretion.