Plant Growth

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Across
  1. 3. A zygote that has divided and started developing
  2. 5. reproductive structure of a gymnosperm
  3. 6. Protect the flower while it is developing
  4. 9. cone-bearing plants that are mainly conifer trees
  5. 11. Flowering Plants
  6. 13. Traps pollen grains in a sticky substance
  7. 15. Male cones produce this to flourish other plants
Down
  1. 1. A single cell formed when an egg and sperm join
  2. 2. When the plant reacts to its environment
  3. 4. Chemicals that control the ripening of fruit
  4. 7. male part of the flower
  5. 8. Brightly colored in order to attract insects
  6. 10. Two of these in every grain of pollen
  7. 12. A female part that contains eggs
  8. 14. Hormone responsible for the growth of roots and stems