Animals - Topic 1.4

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Across
  1. 6. require moist or watery environments
  2. 7. body temperature changes with the environment
  3. 9. have jointed appendages
  4. 10. most organisms have a balance of body parts called _____________
  5. 13. have stinging cells
  6. 14. Animals without a backbone are called ___________
Down
  1. 1. means spiny skin
  2. 2. Animals with a backbone are called ____________
  3. 3. a body structure composed of different kinds of tissues that work together
  4. 4. land animals that chew the cud and have a divided hoof, such as cattle, deer, goats, and sheep; seafood with both fins and scales, such as bluegill, grouper, and cod; certain birds, including chickens, doves, and ducks; and even some insects, such as grasshoppers and locusts.
  5. 5. a flexible rod that supports the chordate’s back
  6. 8. a hard, protective covering that protects, supports, and helps prevent evaporation of water from the body
  7. 11. egg-laying mammals
  8. 12. Both reptiles and whales use this organ to help conserve water