Chapter 15: Section 1

Match it! Select the correct answer from the pull down...Good luck!

Sponges belong to the phylum ___.

What cells do sponges have that no other animal has?

The body parts of some inveretebrates are contolled by indiviual groupings of nerve cells called ___.

Digestion of food particles in a sponge takes place in its ___.

Which of the following describes the body plan of a sponge?

The body parts of a jellyfish is the ___, which looks like a ball with tentacles hanging underneath.

The organs of more-comples invertebrates such as the earthworm contain in a body cavity called the ___.

Invertebrates make up what percentage of all animals?