PLANTS AND ANIMALS NUTRITION AND GAS EXCHANGE CROSSWORD PUZZLE

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Across
  1. 2. is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs.
  2. 3. is an organism that produces complex organic compounds.
  3. 4. is a condition in which something takes in another substance.
  4. 7. are tiny openings or pores in plant tissue that allow for gas exchange.
  5. 8. is a chemical compound composed of one carbon and two oxygen atoms.
  6. 12. is an animal or plant that eats the flesh of animals.
  7. 13. is an organism that cannot produce its own food.
  8. 15. energy-carrying molecule found in the cells of all living things.
  9. 19. is a green pigment found in plants.
  10. 20. are aquatic and photosynthetic, that is, they live in the water, and can manufacture their own food.
  11. 21. is the set of life-sustaining chemical reactions in organisms.
  12. 22. a disorder of structure or function in a human, animal, or plant, especially one that produces specific signs or symptoms or that affects a specific location and is not simply a direct result of physical injury.
  13. 23. is a substance used by an organism to survive, grow, and reproduce.
  14. 24. are multicellular eukaryotic organisms that form the biological kingdom Animalia.
  15. 25. are essential for any ecosystem.
Down
  1. 1. the absorption and digestion of food or nutrients by the body or any biological system.
  2. 5. is a chemical reaction that takes place inside a plant, producing food for the plant to survive.
  3. 6. is any individual entity that propagates the properties of life.
  4. 9. are animals whose primary food source is plant-based.
  5. 10. its perform numerous roles in living organisms.
  6. 11. is a fundamental feature of all known life.
  7. 14. the production of complex molecules within living organisms or cells.
  8. 16. the process of eliminating or expelling waste matter.
  9. 17. the breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy.
  10. 18. a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.