Across
- 3. Part of the plant that "senses" gravity
- 4. Abbreviation for the chemicals that work like hormones in plants
- 7. Its length controls photoperiodism
- 9. Responsible for secondary growth
- 13. Response to the relative length of light and darkness in 24 hours
- 14. Roots are ___ gravitropic
- 15. Encloses the endosperm and embryo
- 17. Grows phloem to the outside
- 18. Will form stem and leaves
- 20. Transport food and water
- 23. Cells on a lighted side ___ growing to bend towards the light
- 24. Promote lateral growth of buds, stems, or branches
- 25. Use these to stimulate a plant cutting to grow roots
- 26. Gas that promotes aging or ripening of fruit
- 27. Rings that show a tree's age
- 28. Surface cells that cover the plant
Down
- 1. Growth towards or away from a stimulus
- 2. Produces tree bark
- 5. Sprouting of the seed
- 6. Transfers nutrients to the developing embryo
- 8. Discovered from a fungal infection on Japanese rice
- 10. Supports plant, stores nutrients, performs photosynthesis
- 11. Plant growth towards light
- 12. Zones of undifferentiated cells
- 16. Called seed leaves
- 19. Stems are ___ gravitropic
- 21. Accumulates in response to dry conditions and inhibits growth
- 22. Meristems are responsible for ___ growth.