5th grade Ch.9

123456789101112
Across
  1. 3. protective membrane that surrounds the embryo
  2. 5. groove along the side of a developing chordate that develop into other body structures
  3. 7. animal that generates body heat from the inside
  4. 9. internal rigid framework that supports humans and other animals
  5. 10. body plan which cannot be divided into any parts that are nearly mirror images of each other
  6. 12. thick hard outer covering that protects crabs and other animals
Down
  1. 1. animal that survives by living inside or on another organism get food from organism and does not help in organism survival
  2. 2. body plan which organism can be divided into two parts that are nearly mirror image of each other
  3. 4. process in which the body form of an animal changes as it grows from an egg to an adult
  4. 6. body plan which can be divided into two parts that are nearly mirror images of each other through its central axis
  5. 8. animal that heats its body with heat from the environment
  6. 11. flexible rod-shaped structure that supports the body of developing chordate