1. False, because the right answer is: Invertebrates are animals without a backbone or skeletal skeleton, such as a starfish.
2. True
4. False because echinoderms are a group of marine organisms with spiny skin that is composed of all animals that have a radially symmetrical arrangement
5. True
6. True
7. True
8. False, because the right answer is: On the bottom of the central disc region of its body resides the mouth of a starfish.
9. True
10. False, because the right answer is: A starfish is a sort of animal that feeds on rotting materials.