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