Plant Growth

12345678910111213141516
Across
  1. 4. when a plant reacts to its environment
  2. 7. the reproductive structure of a gymnosperm
  3. 8. female parts inside of a scale
  4. 9. as a single cell divides and develops it becomes a ______
  5. 10. what male cones produce
  6. 13. each grain of pollen contains two of these
  7. 14. contains a sticky substance to trap pollen
  8. 16. responsible for the growth of roots and stems
Down
  1. 1. formed when the sperm and egg join
  2. 2. means “to turn or change”
  3. 3. cone bearing plants that are mainly conifer trees
  4. 5. the color of female pine cones that are only one year old
  5. 6. controls the ripening of fruit
  6. 11. inside the ovules
  7. 12. auxin is only produced at this tip of the branch
  8. 15. too much _____ produces too much cell elongation