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