Question

17
an organism that is considered part of the mollusca phylum is _.
oyster jellyfish
zooplankton tube worms

Explanation:

Mollusca is a large phylum in the animal kingdom. Oysters are bivalve mollusks, which have a soft body enclosed in a hard shell made of calcium carbonate. Jellyfish belong to the phylum Cnidaria. Zooplankton is a diverse group that includes many different organisms from various phyla. Tube - worms can belong to different phyla such as Annelida (some polychaete tube - worms).

Answer:

oyster