Animals that possess a backbone.

A large opening on a sponge through which filtered water is expelled.

Cells within a sponge that produce its skeletal structure, perform digestion, and repair cell damage.

A group of cells surrounded by a shell made of spiracles.

An immature stage of an animal that appears different from the adult stage.

A complete morphological change from larva to adult form.

An attached cnidarian stage, appearing sac-like or barrel-like with it's tentacles facing up.

A free-swimming cnidarian stage, appearing bell or umbrella-like with its tentacles facing down.

A jellylike substance between the inner layer and outer layer of cells in a cnidarian.

Organisms in both Phylum Porifera and Phylum Cnidaria can reproduce sexually and asexually.

Which of the following is NOT a function of amoebocytes in sponges?

Why isn't a cnidarian's gastrovascular cavity not a true gut?

What is the stinging cell of a cnidarian called, that is used to paralyze or kill their prey.

These dinoflagellates are capable of photosynthesis and have a symbiotic relationship with coral, providing them carbon compounds they use as energy.

These cells in a sponge have flagella to help create currents in the water to keep the water moving through the sponge.

This remarkable feature of sponges is when broken-off pieces of a sponge body can come back together and reorganize, forming new individual sponges.