Chapter 21-23 Crossword

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263
Across
  1. 4. cluster of sporangia
  2. 5. openings in the outer call layer of leaves and some stems
  3. 8. a group of plant hormones that causes cell elongation, stimulates cell division, and affects seed growth
  4. 11. the first part of the embryo to appear outside the seed
  5. 12. plant a plant that flowers over a range in the number of hours of darkness
  6. 14. spore that develops into a female gametophyte and is produced by a conifer's female cone
  7. 16. the layer of cells that make up the outer covering on a plant
  8. 17. cells phloem cells that have a nucleus
  9. 18. growths in rapidly dividing cells
  10. 20. the main food-carrying tissue
  11. 22. a flowering response that happens after hours of uninterrupted darkness
  12. 23. a process that lets evaporated water from the inside of a leaf escape through the stomata
  13. 25. a layer of cells at the inner boundary of the cortex
  14. 26. tissue consists of parenchyma, collenchyma, and sclerenchyma cells and have diverse functions
  15. 27. what a male gametophyte, consists of four cells and develops
  16. 28. the opening of the ovule
  17. 31. long, cylindrical cells with pitted ends
  18. 32. a plant's growth response to an external stimulus
  19. 33. a period of little or no growth
  20. 34. cells plant cells that lack cytoplasm and other living components when they mature, but their thick, rigid cell walls remain
  21. 38. a small threadlike structure
  22. 41. a tissue that forms as a result of divisions a provides nourishment for the embryo
  23. 43. a layer of cells directly next to the endodermis toward the center of the root
  24. 46. a structure that contains the male or female reproductive structures of cycads and other gymnosperm plants
  25. 47. a response to chemicals produced by archegonia
  26. 50. cells the two cells that form the stomata
  27. 51. response a plants response that causes movement not dependent on the direction of the stimulus
  28. 54. plants type of plant that lacks vascular tissue
  29. 58. a simple compound composed of two carbon and four hydrogen atoms
  30. 59. plant structure that contains an embryo, contains nutrients for the embryo, and is covered with a protective coat
  31. 60. plant flowers when exposed daily to a number of hours of darkness that is greater than its critical period
  32. 61. plant that completes its growing season in one season or less
  33. 62. a water-carrying vascular tissue composed of specialized cells called vessels
  34. 63. mesophyll layer below the palisade consisting of irregularly-shaped, loosely packed cells with spaces surrounding them
Down
  1. 1. elements tubular cells that are stacked end-to-end, forming strands of xylem called vessels
  2. 2. female reproductive organ of the flower
  3. 3. mesophyll palisade layer
  4. 6. produce two types of spores that develop into male or female gametophytes
  5. 7. plant who's life span is several years
  6. 9. tube member a cell in the phloem containing cytoplasm but a lack of a nucleus and ribosomes when mature
  7. 10. protect the flower bud and can look like small leaves or even flower petals
  8. 13. regions of rapidly dividing cells
  9. 15. a plant that lives anchored to an object or another plant
  10. 19. plant plants native to tropical regions
  11. 21. plant flowers when the number of hours of darkness is less than its critical period
  12. 22. cells more flexible, thin-walled cells found through-out a plant
  13. 24. reproduction a form of asexual reproduction in which new plants grow from parts of an existing plant
  14. 29. cambium produces cells that develop tough cell walls
  15. 30. nuclei the nuclei by it self on on end of the cell with two others on the opposite side
  16. 35. structures that either store food or help absorb food for the tiny sporophyte
  17. 36. cap tip of the root
  18. 37. cells plant cells that often are elongated and occur in long strands or cylinders that provide support for the surrounding cells
  19. 38. a tiny heart-shaped gametophyte
  20. 39. plant who's life spans two years
  21. 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
  22. 42. a plant hormone
  23. 43. stalk that connects some plants leaves to the stem
  24. 44. the structure where fern spores are formed
  25. 45. the process when the embryo in the seed starts to grow
  26. 48. a compact cluster of spore-bearing structures
  27. 49. layer below the epidermal layer
  28. 52. plants type of plant with vascular tissues adapter to land environments
  29. 53. leafy
  30. 55. male reproductive organs of flowers
  31. 56. food storage organ
  32. 57. usually colorful structures that can both attract pollinators and provide them with landing platforms