Across
- 2. rows of fine, teethlike projectins that the mollusk uses to scrape off small bits of food
- 4. Arthropods have a rigid body covering called a
- 6. animals that do not have a backbone
- 8. Animals that have joint appendages
- 10. Does not have blood vessels to contain their blood
- 11. Change in body form
- 14. Bell-shaped body
Down
- 1. Blood is carried through blood vessels
- 3. organs in which carbon dioxide from the animal is exchanged for oxygen
- 5. structures such as claws, legs, and antennae that grow from the body
- 7. vase-shaped body
- 9. a thin layer of tissue that covers the mollusks’s soft body
- 12. Soft bodied invertebrates that usually have a shell
- 13. the arrangement of the individual parts of an object that can be divided into similar halves