Horticulture Review Crossword

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Across
  1. 3. the physiological reaction of a plant to the length of its exposure to light
  2. 6. a physiological process that requires a plant to undergo a cold period before it can flower
  3. 8. the ability of a plant to withstand cold temperatures
  4. 10. the prevention of injury or loss
  5. 12. the process of converting solar energy into stored chemical energy
  6. 15. the percentage of pore spaces within the total volume of a medium
  7. 16. a plant hormone involved in plant dormancy and plant responses to stress
  8. 17. a plant hormone that regulates the ripening of fruit, opening of flowers, and abscission of leaves
  9. 19. naturally occurring compound produced by a plant that regulates all growth and development
  10. 20. the decayed remains of plants, animals, and other organisms
  11. 21. a plant hormone that plays a roll in cell division and differentiation and cell enlargement
Down
  1. 1. a tiny pore in the epidermis of a leaf that regulates the exchange of gases
  2. 2. a device worn over the mouth and nose to prevent inhalation of dust, smoke, or other noxious substances
  3. 4. the practice of growing plant rots in a liquid
  4. 5. the physiological reaction of a plant to day and night temperatures
  5. 7. the stretching caused by an elongation of the internodes in response to low light intensity
  6. 9. the material in which a plant grows
  7. 11. compound that stimulates stem division and elongation and maintains apical dominance
  8. 13. a plant hormone that stimulates dormancy, flowering, and seed germination
  9. 14. a synthetic auxin used to promote rooting of cuttings
  10. 18. water vapor in the air