Across
- 1. contains a sticky substance that traps pollen
- 4. when the sperm and the egg join together it forms this
- 5. flowering plants
- 7. means light
- 9. hormone responsible for growth of roots and stems
- 10. when a plant reacts to the environment
- 12. as a single cell divides and developes it is called this
- 13. all cone-bearing plants and are mainly conifer trees
- 14. chemicals that control the ripening of fruit
Down
- 2. the reproductive structure of a gymnosperm
- 3. what the male cones produce
- 6. these are the two female parts that each scale contains
- 8. to turn of change
- 11. two of these cells are in each grain of pollen
- 13. response to gravity