Plant reproduction

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Across
  1. 4. pollen lands and gets trapped at the base of each…
  2. 5. the reproductive structure of a gymnosperm
  3. 7. auxin is only produced where in the plant?
  4. 9. single cell
  5. 10. when a zygote develops it becomes a…
  6. 13. each scale has 2 of these
  7. 14. each grain of pollen carries 2
  8. 15. responsible for the growth of stems and roots
Down
  1. 1. all come bearing plants, mainly conifer trees
  2. 2. male conifers produce…
  3. 3. response to gravity
  4. 6. chemicals that determine how long plant will live, controls the ripening of fruits, etc.
  5. 8. response to light
  6. 11. when a plant reacts to its environment
  7. 12. when the ovule around the embryo turns into a hard covering it creates a…