Plant vocab crossword

1234567891011121314151617181920
Across
  1. 5. first root
  2. 9. Chemical signal
  3. 12. Cell splits into 2 cells
  4. 13. Step by step process
  5. 17. Tough outer cover of seed
  6. 19. Plant cells
  7. 20. Collect sunlight
Down
  1. 1. Seed growths
  2. 2. Plant's leaf growth
  3. 3. Main vein
  4. 4. Supply nutrients
  5. 6. Switches
  6. 7. Cell grow longer
  7. 8. Underground part of plant
  8. 10. Main support
  9. 11. 2 cotyledon
  10. 14. Seeding break through soil
  11. 15. Grow into leaf
  12. 16. 1 cotyledon
  13. 18. material plants grow in