1.As water flows in and out of their bodies, _______ take in oxygen and food.
2.A sponge can drop a piece of itself on to the floor of the ocean and the little piece then grows into a new individual. This is an example of _______.
3.Flatworms are _______.
4.Before jellyfish get to their mature stage, they begin as a _______.
5.Almost all cnidarians use special cells called _______ at the ends of their tentacles to inject poison into their prey.
6._______ are the simplest animals that exhibit bilateral symmetry.
7.Leeches and earthworms are members of the _______ Phylum.
8._______ are defined as animals that have a soft body which have an internal or external shell.
9.Many _______, like octopi, squids and cuttlefish, have suckers on their tentacles that help them grab their prey.
10.A heterotrophic multicellular organism that does not have cell walls is called a(n) _______.
11.Which of the following are made of cells?