Biology

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Across
  1. 2. An organism that depends on others for food
  2. 6. An organism that feeds on a living host
  3. 8. Evaporation of water from plant leaves
  4. 10. Proteins that help destroy infectious agents
  5. 11. Lacking internal body heat regulation
  6. 13. The end of an animal closest to the head
  7. 14. An outer layer of cells for protection
  8. 15. Vessels that carry blood away from heart
  9. 16. An organic molecule contains this element
  10. 17. A section of DNA that causes a trait
Down
  1. 1. A thin covering of tissue
  2. 3. A cell with membrane-bounded organelles
  3. 4. A chemical that provides toughness & flexibility
  4. 5. Process by which plants use energy of sun
  5. 7. The soft tissue inside the bone the produces blood
  6. 9. An animal that does not have a backbone
  7. 12. An animal that eats only plants