B324 L7 Vocab

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Across
  1. 2. a small cellular body or bud that can separate to form a new organism.
  2. 7. meiosis, alternation of generations; common in most land plant; the zygote divides mitotically to produce a multicellular diploid sporophyte; the sporophyte creates spores via meiosis which aslo then divide mitotically producing haploid individuals called gametophytes.
  3. 9. spore-bearing plant.
  4. 12. the asexual and usually diploid phase that produces spores from which the gametophyte arises; is the dominant form in vascular plants.
  5. 13. the fusion of two gametes to form a zygote.
  6. 17. a specialized organ or cell in which gametes are formed in algae, ferns, and some other plants.
  7. 22. the sperm producing organ of algae, mosses, ferns, fungi, and other nonflowering plants.
  8. 24. meiosis, where the dominant part of the life cycle is haploid (1n) and makes a diploid (2n) gamete; the haploid spore undergoes meiosis to create gametes; Charophyceae life cycle.
  9. 25. a class of green algae that is theorized to be most likely the ancestor of lant plants.
  10. 27. club mosses.
  11. 29. the egg producing organ of algae, mosses, ferns, fungi, and other nonflowering plants.
  12. 30. a haploid reproductive cell which gives rise to a gametophyte.
  13. 31. woody vines in tropical forests.
  14. 32. mosses.
  15. 34. the stalk of bryophytes.
  16. 35. when the female gamete is larger and remain immotile where the male gamete is small and motile.
Down
  1. 1. all of the organisms from a common ancestor.
  2. 3. sperm producing gametangia.
  3. 4. a plant that has flowers and produces seeds enclosed within a carpel.
  4. 5. simple nonvascular seedless plants; consist of three phyla Marchantiophyta, Bryophyta, and Anthocerotophyta.
  5. 6. liverworts.
  6. 8. evolution, unrelated organisms but share similar characteristics.
  7. 10. egg producing gametangia.
  8. 11. ferns and other related plants.
  9. 14. organisms descended from a common ancestor, but not including all the descendant groups.
  10. 15. a plant that has seeds unprotected by an ovary or fruit; cone-bearing plant.
  11. 16. where meiosis occurs to produce haploid spores; also called the capsule.
  12. 18. ginkgo.
  13. 19. do not share a common ancestor.
  14. 20. conifers.
  15. 21. a thread-like chain of cells that forms the earliest stage of development of the gametophyte.
  16. 23. hornwort.
  17. 26. cycads.
  18. 28. gamete-bearing plant.
  19. 33. period, 505-440 MY BP; the first plants; cyanobacteria and algal mats.