bio diversity 2/15 notes

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Anonymous
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136407
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bio diversity 2/15 notes
Updated:
2012-02-19 23:48:07
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bio diversity
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bio diversity
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  1. what term is used for "naked-seeded"?
    gemnosperms
  2. what are the seed plants that do NOT form flowers?
    gymnosperms
  3. what has seeds that are not covered by ovary or fruit tissue? (seed is naked, but not embryo)
    gymnosperm
  4. are most gymnosperms evergreen or decidous?
    evergreen
  5. 4 major groups of extant gymnosperms?
    cycads, conifers, ginkos, gnetophytes
  6. Which gymnosperm groups has 300 species, is palm-like, and is in the tropics/subtropics?
    cycads
  7. which gymnosperm group has 1 species, is a tree, and is native to China?
    Ginkos
  8. which gymnosperm groups has 90 species, has a variable form, and wide range?
    gnetophytes
  9. what gymnosperm groups has 700 species, are trees (coned), and are in high altitudes and latitudes
    conifers
  10. what does it mean when a plant is vascular?
    it has phloem (transports sugars), and has xylem with treicheids (transport water)
  11. what are the characteristics of Cycads?
    Vascular, Dioecous, slow growing, highly toxic tissues if ingested, confused with ferns or palms, reproductive structures are cones (stobili), have ciliated sperm
  12. What are the characteristics of ginkos?
    vascular, unique fan- shaped leaves with paralell venation, slow growing, dioecous, deciduous, ciliated sperm
  13. what are the applications of ginkos?
    They can tolerate urban population, leaf extract can be taken to "enhance" memory and "improve" dementia
  14. What are the characteristics of gnetophytes?
    vascular, mostly dioecous, have 3 genera
  15. what are the 3 genera of gnetophytes?
    gnetum, ephedra, welwitschia
  16. what are the characteristics of conifers?
    vascular, have small-needlelike evergreen leaves (help reduce water loss and deal w/ short growing season),produce resin that functions as antifreeze, monoecious, reproductive structures are cones, multi year life cycle
  17. what are the cone reproductive structures called?
    strobili
  18. In conifers, what is the small, pollen- bearing cone of the male?
    microstrobili
  19. In conifers, what is the large, seed bearing cone of the female?
    megastrobili
  20. What does dioecious mean?
    structures are either male or female
  21. what does monoecious mean?
    individual plants have both male and female reproductive structures
  22. which group has the largest living organism on Earth, the oldest plant on Earth, and the largest Biome on Earth?
    conifers
  23. what is the largest living organism on Earth?
    Bristle cone (california)
  24. What is the largest plant on Earth?
    Giant Sequoia (California) (General Sherman)
  25. What is the largest biome?
    Northern Coniferous Forest (Taiga)
  26. What is the plant group that dominates todays landcape?
    Angiosperms

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