GAS EXCHANGE IN HUMANS, PLANTS, AND ANIMALS CROSSWORD

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Across
  1. 3. -Specialized cells surrounding the stomata that control their opening and closing, thereby regulating gas exchange and water loss in plants.
  2. 7. -is the waste product of respiration in plant cells
  3. 8. -Also known as the windpipe, it is the tube-like structure that connects the larynx to the bronchi, allowing air to pass into and out of the lungs.
  4. 9. -a muscular tube-shaped structure located behind the nose and mouth that serves as a passage for both air and food, playing a vital role in both respiratory and digestive systems.
  5. 10. -A protein molecule found in red blood cells that binds to oxygen molecules in the lungs and transports them to tissues throughout the body, facilitating gas exchange in the bloodstream.
  6. 12. -where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
Down
  1. 1. -Small blood vessels with thin walls that facilitate the exchange of gases, nutrients, and waste products between the bloodstream and surrounding tissues.
  2. 2. -are small pores present on the lower surface of green leaves of plants that are responsible for the exchange of oxygen and carbon dioxide.
  3. 4. -A thin, dome-shaped muscle located below the lungs that contracts and relaxes to facilitate breathing by creating changes in thoracic cavity volume, resulting in inhalation and exhalation.
  4. 5. -L primary organs of the respiratory system in humans and other vertebrates, responsible for the exchange of gases between the air and the bloodstream.
  5. 6. -movement of molecules in the direction following the concentration gradient, from a region of greater concentration to a lower concentration.
  6. 11. -Respiratory organs found in aquatic animals, such as fish and some invertebrates, that facilitate gas exchange by extracting oxygen from water and releasing carbon dioxide.