Which of these is a picture of a choanocyte?

The large opening at the top of the sponge is called the

The first organisms to evolve tissues that helped with the movement of the organism?

This picture of a sea anemone would represent which form of a Cnidarian?

True or False? Both Porifera and Cnidaria can reproduce via asexual and/or sexual reproduction.

Which phylum first developed a mouth with a central digestive area due to the two cell layers, endoderm and ectoderm.

Cnidarians were the first animals to develop _____________ cells so they could react to their environment.

Jellylike material that absorbs and digests the food particles that are caught in the filtering process, move nutrients, and transport oxygen and waste.

These leathery and thin cells form the sponge's outer layer.

Also called "collar cells" they have a flagella that helps them pull water into the organism and microvilli that filter the food.

Sessile

Multicellular

Has a "stomach"

Represent the first transition from unicellular to multicellular animals.