Across
- 4. Small opening. These on the surface of the leaf allow water and gases to move in and out of the leaf.
- 9. Continuous flow of water through the xylem of a plant, from the roots up to the leaves where it evaporates.
- 11. Structure in the lung that provides a large surface area with an extensive network of capillaries to carry out gaseous exchange.
- 15. Soluble protein that also contains an iron atom. Found in red blood cells. It carries oxygen from the lungs to respiring tissues.
- 17. Pores on the surface of a leaf that allow water, carbon dioxide, and oxygen to move in and out of the leaf.
- 18. Process that can move substances across cell membranes from low concentrations to high concentrations.
- 20. Tissue specialised for transport of oxygen, carbon dioxide, food molecules, and wastes in larger animals.
- 21. Structure in the small intestine that provides a large surface area with an extensive network of capillaries to absorb the products of digestion by diffusion and active transport.
- 22. Not containing enough water to function properly
- 23. Lower chambers of the heart that contract and force blood out of the heart into the arteries.
- 28. Apparatus used to measure the rate of transpiration by measuring the uptake of water by a plant.
Down
- 1. gradient Difference in concentration of a substance from one region to another.
- 2. Protein that carries something; for example, some protein carriers transport sodium ions out of nerve cells by active transport.
- 3. Moveent of water through the xylem of a plant, from the roots up to the leaves.
- 5. Plant tissue made up of dead cells that has the function of transporting water and dissolved substances through the plant.
- 6. Fluid in blood in which the cells are suspended. It transports carbon dioxide, digested food molecules and urea.
- 7. Organ system that exchanges aterials, such as oxygen, carbon dioxide and other wastes, between the organism and its surroundings.
- 8. Membrane that has small pores through which small molecules such as water can pass., but not larger molecules such as proteins.
- 9. Transport of sugars made in photosynthesis in the leaf to areas of the plant that store them or use them.
- 10. mesh tube which is inserted into a blocked artery.
- 12. Structures that allow one way movement of blood and prevent backflow.
- 13. Organ of many land animals, specialised to exchange oxygen and carbon dioxide.
- 14. Movement of air into and out of the lungs, brought about by inhaling and exhaling.
- 16. Diffusion of water through a partially permeable membrane, from a dilute solution to a more concentrated solution.
- 19. Small blood vessel with a thin and narrow diameter. Capillaries allow exchange of substances between cells and blood.
- 24. Having equal concentrations of dissolved substances.
- 25. Space in a blood vessel through which blood flows.
- 26. Plant tissue made up of living cells that has the function of transporting food substances through the plant.
- 27. Upper chambers from the heart that receive blood from the veins.