Gas Exchange

5. Respiratory organs in aquatic animals, such as fish and some amphibians, that extract oxygen from water and release carbon dioxide.
9. Tiny blood vessels that surround the alveoli in the lungs and the root hairs in plant roots, enabling the exchange of gases between the respiratory or root system and the circulatory system.
10. The process in plants where carbon dioxide is taken in through stomata and converted into oxygen using sunlight, while releasing glucose as a byproduct.
11. The movement of air or water to and from respiratory organs, such as the lungs or gills, to facilitate gas exchange and maintain optimal oxygen levels.
12. Organs in animals responsible for the exchange of oxygen and carbon dioxide during respiration. They are essential for breathing and are found in vertebrates like mammals, birds, reptiles, and amphibians.

1. membrane Also known as the air–blood barrier,
2. Small openings on the surface of leaves and stems in plants that allow for the exchange of gases, such as oxygen and carbon dioxide, with the surrounding environment.
3. Small sacs in the lungs where gas exchange occurs between the air and blood. Oxygen is absorbed into the bloodstream, while carbon dioxide is released from the blood into the alveoli to be exhaled.
4. The process by which gases move from areas of higher concentration to areas of lower concentration, driving the exchange of oxygen and carbon dioxide in both plants and animals.
6. cells Specialized cells surrounding stomata in plant leaves that regulate the opening and closing of stomata, thus controlling gas exchange and water loss.
7. Also known as the windpipe, the trachea is a tube-like structure in animals that connects the throat to the lungs, facilitating the passage of air during breathing.
8. A muscle located below the lungs in animals that contracts and relaxes to create changes in thoracic cavity volume, aiding in inhalation and exhalation during breathing.