Ch2B The Supply of a Plant with Mineral Substances

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Across
  1. 2. A chemical that changes color depending on the acidity or basicity of a solution, used to measure pH.
  2. 6. Small openings on the underside of leaves that allow gases like oxygen and carbon dioxide to enter and exit the plant.
  3. 7. The broad, flat part of a leaf where photosynthesis primarily occurs.
  4. 9. A technique that uses radioactive isotopes to visualize molecules, often used in biological research to track substances in cells or tissues.
  5. 10. The upward force exerted by water entering the roots, helping push water up through the plant.
  6. 11. The difference in the concentration of a substance between two regions, which drives diffusion.
  7. 14. The air space inside a leaf just below the stomata, involved in gas exchange.
  8. 15. A waxy layer on the surface of leaves that helps prevent water loss.
  9. 18. A property of molecules where one end has a slight positive charge, and the other has a slight negative charge.
  10. 19. The stalk that connects the leaf blade to the plant stem.
  11. 20. The inner tissue of a leaf where photosynthesis takes place, containing many chloroplasts.
  12. 21. A device used to measure pressure, often used in experiments related to gas or fluid pressure.
Down
  1. 1. The process by which plants give off water vapor through the stomata in their leaves.
  2. 3. The attraction between water molecules due to hydrogen bonding, causing them to stick together.
  3. 4. Atoms with unstable nuclei that decay over time, releasing radiation, and are used in scientific research and medical imaging.
  4. 5. The attraction between water molecules and other surfaces, helping water move through plant tissues.
  5. 8. A device used to measure the rate of water uptake by a plant, which can indicate transpiration rates.
  6. 11. The ability of water to flow in narrow spaces without the assistance of external forces, driven by cohesion and adhesion.
  7. 12. The movement of molecules from an area of high concentration to an area of low concentration.
  8. 13. Cells that surround and control the opening and closing of stomata.
  9. 16. The vascular tissue in leaves, made up of xylem and phloem, responsible for transporting water, nutrients, and sugars.
  10. 17. bond A weak bond between a hydrogen atom in one molecule and an electronegative atom (like oxygen) in another, important in water.