light crossword

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Across
  1. 2. light intensity are measured in
  2. 4. uses blue and green light for photosynthesis
  3. 7. plants that arent affected by photoperiod
  4. 8. plants that begin to flower when the nights are under 12 hours
  5. 10. plants response to light duration/length
Down
  1. 1. what wavelengths are measured in
  2. 3. stretching of the stem
  3. 5. uses red and blue light for photosynthesis
  4. 6. plants that begin to flower when the nights are more than 12 hours long
  5. 9. this type of light promotes seed germination,seedling growth and flowering