Botany

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Across
  1. 4. plant reacts to its environment
  2. 5. created when sperm + egg combine single cell
  3. 7. all cone bearing plants
  4. 11. response to gravity
  5. 13. reproductive structure of gymnosperms
  6. 15. grows roots and stems
  7. 16. Created when zygote splits
Down
  1. 1. each grain contains two of this
  2. 2. controls the ripening of fruits
  3. 3. these contain pines firs and hemlocks
  4. 6. in the ovule
  5. 8. produced by male cones
  6. 9. contains two female parts
  7. 10. response to light
  8. 12. in the scale
  9. 14. to turn or change