Across
- 4. A plant that produces seeds that are not enclosed by a protective fruit
- 6. A plant hormone that speeds up the rate of growth of plant cells
- 7. A seed leaf sometime stores food
- 9. A plant that flowers when the nights are longer than the plant's critical night length
- 11. The reproductive structure of a angiosperm
- 13. A farming method in which plants are grown in solutions of nutrients instead of soil
- 14. A structure that covers the tip of a root, protecting the root from injury
- 15. Tiny particles (male gametophytes) produced by seed plants that contain the cells that later become sperm cells
- 16. The male reproductive part of a flower
- 17. A flower structure that encloses and protects ovules and seeds as they develop
- 20. A farming method in which farmers use technology to fine tune the amount of water and fertilizer they use to match the requirements of a specific field
- 22. A colorful, leaf like structure of some flowers
- 23. The small openings on the surfaces of most leaves through which gases can move
- 24. The transfer of pollen from male reproductive structures in plants
- 27. the number of hours darkness that determines whether or not a plant will flower
- 28. A plant with a flowering cycle that is not sensitive to periods of light and dark
- 32. A flowering plant that produces seeds enclosed in a protective structure
- 33. The vascular tissue through which water and nutrients move in some plants
- 34. The reproductive structure of a gymnosperm
- 37. A chemical that affects growth and development
- 39. A layer of cells in a plant that produces new phloem and xylem cells
- 40. A flowering plant that completes its life cycle in two years
Down
- 1. A period when an organism's growth or activity stops
- 2. The sprouting of the embryo out of a seed. Occurs when the embryo resumes its growth
- 3. The young organism that develops from a zygote
- 5. A plant structure in seed plants that produces the female gametophyte, contains an egg cell
- 8. The process by which water is lost through a plant's leaves
- 10. A plant's response to seasonal changes in length of night and day
- 12. A plant that flowers when the nights are shorter than the plant's critical night length
- 18. A leaf like structure that encloses the bud of a flower
- 19. The female reproductive part of a flower
- 21. The process of altering an organism's genetic material to produce an organism with qualities that people find useful
- 25. A flowering plant that completes its life cycle in one growing season
- 26. The plant structure that contains a young plant inside a protective covering
- 29. A flowering plant that lives for more than two years
- 30. The growth of a plant toward or away from a stimulus
- 31. The vascular tissue through which food moves in some plants
- 35. The ripened ovary and other structures of an angiosperm that encloses one or more seeds
- 36. An angiosperm that has two seed leaves
- 38. An angiosperm that has only one seed leaf