Across
- 4. cluster of sporangia
- 5. openings in the outer call layer of leaves and some stems
- 8. a group of plant hormones that causes cell elongation, stimulates cell division, and affects seed growth
- 11. the first part of the embryo to appear outside the seed
- 12. plant a plant that flowers over a range in the number of hours of darkness
- 14. spore that develops into a female gametophyte and is produced by a conifer's female cone
- 16. the layer of cells that make up the outer covering on a plant
- 17. cells phloem cells that have a nucleus
- 18. growths in rapidly dividing cells
- 20. the main food-carrying tissue
- 22. a flowering response that happens after hours of uninterrupted darkness
- 23. a process that lets evaporated water from the inside of a leaf escape through the stomata
- 25. a layer of cells at the inner boundary of the cortex
- 26. tissue consists of parenchyma, collenchyma, and sclerenchyma cells and have diverse functions
- 27. what a male gametophyte, consists of four cells and develops
- 28. the opening of the ovule
- 31. long, cylindrical cells with pitted ends
- 32. a plant's growth response to an external stimulus
- 33. a period of little or no growth
- 34. cells plant cells that lack cytoplasm and other living components when they mature, but their thick, rigid cell walls remain
- 38. a small threadlike structure
- 41. a tissue that forms as a result of divisions a provides nourishment for the embryo
- 43. a layer of cells directly next to the endodermis toward the center of the root
- 46. a structure that contains the male or female reproductive structures of cycads and other gymnosperm plants
- 47. a response to chemicals produced by archegonia
- 50. cells the two cells that form the stomata
- 51. response a plants response that causes movement not dependent on the direction of the stimulus
- 54. plants type of plant that lacks vascular tissue
- 58. a simple compound composed of two carbon and four hydrogen atoms
- 59. plant structure that contains an embryo, contains nutrients for the embryo, and is covered with a protective coat
- 60. plant flowers when exposed daily to a number of hours of darkness that is greater than its critical period
- 61. plant that completes its growing season in one season or less
- 62. a water-carrying vascular tissue composed of specialized cells called vessels
- 63. mesophyll layer below the palisade consisting of irregularly-shaped, loosely packed cells with spaces surrounding them
Down
- 1. elements tubular cells that are stacked end-to-end, forming strands of xylem called vessels
- 2. female reproductive organ of the flower
- 3. mesophyll palisade layer
- 6. produce two types of spores that develop into male or female gametophytes
- 7. plant who's life span is several years
- 9. tube member a cell in the phloem containing cytoplasm but a lack of a nucleus and ribosomes when mature
- 10. protect the flower bud and can look like small leaves or even flower petals
- 13. regions of rapidly dividing cells
- 15. a plant that lives anchored to an object or another plant
- 19. plant plants native to tropical regions
- 21. plant flowers when the number of hours of darkness is less than its critical period
- 22. cells more flexible, thin-walled cells found through-out a plant
- 24. reproduction a form of asexual reproduction in which new plants grow from parts of an existing plant
- 29. cambium produces cells that develop tough cell walls
- 30. nuclei the nuclei by it self on on end of the cell with two others on the opposite side
- 35. structures that either store food or help absorb food for the tiny sporophyte
- 36. cap tip of the root
- 37. cells plant cells that often are elongated and occur in long strands or cylinders that provide support for the surrounding cells
- 38. a tiny heart-shaped gametophyte
- 39. plant who's life spans two years
- 40. the region of the stem nearest the seed,and in many plants, it is the first part of the seedling to appear above the soil
- 42. a plant hormone
- 43. stalk that connects some plants leaves to the stem
- 44. the structure where fern spores are formed
- 45. the process when the embryo in the seed starts to grow
- 48. a compact cluster of spore-bearing structures
- 49. layer below the epidermal layer
- 52. plants type of plant with vascular tissues adapter to land environments
- 53. leafy
- 55. male reproductive organs of flowers
- 56. food storage organ
- 57. usually colorful structures that can both attract pollinators and provide them with landing platforms