Invertebrates

5. most bivalves are omnivores, animals that eat plants and animals (both)
8. some gastropods are herbivores, animals that only eat plants
9. structures or behaviors that allow animal to perform these basic functions in their environments
12. a process in which an animal’s body undergoes dramatic changes in form during its life cycle
16. is a tiny hole or opening that allows the passage of liquid
17. most mollusks that live in water have organs that remove oxygen from the water
19. some species of cnidarians live in a colony, a group of many individual animals
20. long,they are flat and as soft as a jelly

1. a larva is an immature form of an animal that looks very different from the adult
2. Some are carnivores, that only eat other animals
3. the process of shedding an outgrown exoskeleton
4. an organism that lives inside or on another organism
6. chemicals that kill pests
7. long,round body
10. is an appendage attached to the head that contains sense organs
11. an animal that carries pollen among plants
13. invertebrates with an internal skeleton and a system of fluid-filled tubes called a water vascular system
14. biologist classify animals into about 35 different groups
15. invertebrate animals that usually have no body symmetry and never have tissues or organs
18. invertebrates with soft, unsegmented bodies that are often protected by a hard outer shell