CROSSWORD PUZZLE

3. Walls of the guard cells that are thicker.
6. Water only passes through the plants and evaporates, these are the ones that remain in plant tissues.
8. In starch to malate, this occurs when protons are pumped out of guard cells in response to blue light.
10. Found beneath the epidermis and is thick in the topmost part of the midrib.
11. Stomatal opening and closing are under this control.
13. Blue light helps plants to modify their activities at the ____ and molecular levels.
15. Evaporation of water through the stomata or cuticle.
16. Transpiration is responsible for the ____ movement of water from roots to leaves.
19. Are necessary for guard cells to contain.
21. A part of a leaf; this consists of parenchyma cells with large air spaces.
24. The most familiar type of leaf which is large, flat and green. A leaf with two main parts, the lamina and the petiole.
25. During the day, the concentration of _____ cation in the guard cells gradually decreases.
27. Increases the rate of transpiration.
29. Are hairs for protection and for reducing transpiration.
30. A set of cells, which may be parenchyma, collenchyma or sclerenchyma,that surround vascular bundles.

1. Stomata is below the surface of the leaf.
2. These are where the water enters which leads to the opening of the stomata.
4. Yellow pigment absorbs ____ strongly.
5. One of the factors which affect the transpiration rate.
7. It is where the petiole joins the lamina to the stem.
9. Is used up during photosynthesis.
12. Many monocots, ferns, and cycads don't have ____ zone.
14. These are epidermal cells that do not have chloroplasts.
17. Cells that absorb the most sunlight in leaves that are held horizontally.
18. The stomata must remain ____ to let in more carbon dioxide.
20. one of the plants that have palisade mesophyll on upper and lower leaf surfaces.
22. Guard cells become ____ and move apart when the water enters.
23. Usually consists of a single layer of parenchyma cells.
26. In sunflower, the ___ has many vascular bundles surrounded by mesophyll.
28. Petiole joins the ____ to the stem at a node.