What are the cells that act as the sponge’s digestive system called Digestive Cells

The process that sponges get oxygen from the water is called?

Sponges belong to the phylum?

How do sponges reproduce?

Young sponges move through the water, but adult sponges don’t.

Sponges only live in water.

Which is one of the three characteristics that all worms have in common.

How many main groups (phyla) of worms are there?

Annelida are the ______________________worms.

How many “hearts” do earthworms have?

Describe the brain of a worm.

Platyhelminthes are the ___________________worms.

14. Nematoda are the ____________________worms.

How do earthworms move through soil.

Are mollusks invertebrates or vertebrates?

If snails don't have shells that means.

18. A thin layer of tissue covering the internal organs of a mollusks is called a ___________.

Which group of mollusk does not have a radula? ________________________

If a snail and a mollusks live in different areas such as land and water that means.

21. A flexible ribbon of tiny teeth that some mollusks have is called a _________________.

Which group of mollusk have the most complex nervous system of any invertebrate?

How does a cephalopod taste something? ____________________________