Chapter 8- Light

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Across
  1. 6. The red pigment in leaves and apples
  2. 8. Plants that flower when the day light is shorter
  3. 9. When a plant bends or stretches to find the sun
  4. 10. Wavelengths that are least absorbed by plants
  5. 11. The light sensitive substance within plants, that is a soluble protein, that controls stem elongation and leave growth
  6. 13. Lamps that can burn plants
  7. 16. The green pigment in the leaf that helps convert the light energy
Down
  1. 1. The duration of time that the sun shines on a plant each day
  2. 2. What wavelength causes chemical reactions and starts or speeds up various plant responses?
  3. 3. type of radiation that affects chemical and physiological reactions in plants the most
  4. 4. Plants that are not influenced by the amount of day light needed to flower
  5. 5. the opening on the leaf where carbon dioxide enters
  6. 7. The process by which green plants convert the light energy of the sun into chemical energy
  7. 12. Plants that flower when the day light is longer
  8. 14. The measure of intensity or brightness of light
  9. 15. this part of the plant takes up water