Chapter 17!

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Across
  1. 1. spores in angiosperms and gymnosperms form ______.
  2. 3. meristems are found at the tips of roots and shoots.
  3. 6. structure of wood.
  4. 9. reproductive structure in a flower
  5. 10. stalk of the stigma
  6. 12. chamber containing the ovules
  7. 13. structures in angiosperms that attract pollenators.
  8. 15. have several methods, such as staggered maturation, to prevent this (two words, hyphenated)
  9. 19. of the two cells in a pollen grain will form a pollen ______.
  10. 20. _____ fertilization one sperm fertilizes the egg cell and the other fuses with the central cell of the embryo sac
  11. 21. the age of a tree (two words, no spaces)
  12. 26. of pollen grain production
  13. 29. can continue to grow until resources become limited. They exhibit ____ growth.
  14. 33. endosperm cells are 3n, so they are ______ cells.
  15. 34. tissue surrounds developing embryo and forms a hard casing making a ____ coat.
Down
  1. 1. and animal aid are means of _______
  2. 2. landing site for pollen
  3. 4. non-seed plants produce ______ instead of seeds.
  4. 5. within floating fruits rely on this for dispersal.
  5. 7. plants offer animals nector to transfer pollen grains between individuals to achieve pollination
  6. 8. grains contain two _____ cells
  7. 11. kind of growth occurs in the lateral meristem and responsible for the production of wood
  8. 14. pollen grains produce _____ sperm cells.
  9. 16. fusing with a sperm cell, the central cell of the egg sac form the ______
  10. 17. from the ovary wall
  11. 18. of the egg cell produces this diploid cell that will divide and form the embryo
  12. 22. multi-step process by which a seed sends out roots and shoots when it senses the right conditions for life.
  13. 23. reproductive structure in flowering plants
  14. 24. plants decieve animals by resembling a female insect to achieve pollination
  15. 25. singed, dust-like, and explosive seeds rely on this to aid in dispersal.
  16. 27. that damage the bark around the circumfrence of a tree. Can be life threatening because the living cells in a tree are found beneath the bark
  17. 28. that supports the anther
  18. 30. can be made up of large amounts of _____ tissue.
  19. 31. with burrs or with tough coats that need to be digested prior to germination rely on these to disperse them.
  20. 32. meristem cells are found around the circumfrence of the shoot.