Biology Ch 30

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nicknguyen93
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75588
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Biology Ch 30
Updated:
2011-03-28 01:27:57
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Biology
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  1. Seedless Vascular vs Seeded Vascular
    • Seeded Vascular - seeds (diploid). contain pollen
    • Seedless Vascular - use spores (haploid)
    • Both - Vascular Tissue
  2. Tracheids
    long tapered cells. mechanical support and water transport. xylem cells
  3. Vessel Elements
    xylem cell. short and wide. arranged end to end to form continuous tubes (xylem vessels) that are more efficient than tracheids at transporting water
  4. mature ovary
    fruit
  5. mature ovule
    seed
  6. Angiosperms
    • have flowers-reproductive structures
    • sepals
    • petals
    • androecium (stamen) - male. anther and filament
    • gynoecium (carpal) - stigma, style, ovary
    • vessel elemnts
    • fruits (cover seeds)
  7. Gymnosperms
    • naked seeds (lack ovaries)
    • sporophylls
    • Coniferophyta (conifers) - ex: pine, fir, spruce
    • Cycadophyta (cycads) - ex: sago palm
    • Ginkgophyta (ginkgoes) - ex: Ginkgo biloba
    • Gnetophyta - ex: gnetina
  8. Monocots
    • one cotyledon
    • parallel venation in leaves
    • vascular bundles scattered in stem
    • flower parts in 3s
    • ex: grasses
  9. Dicots
    • 2 cotyledons
    • branched venation
    • vascular bundles in ring
    • flower parts in 4s and 5s
  10. Double Fertilization
    during fertilization, one sperm fertilizes egg to form zygote, other combines with 2 polar bodies to create 3n endosperm which serves as nutrients
  11. Epiphytes
    use other plants as a substrate. not parasitic
  12. Similarites between Gymnosperms and Angiosperms
    • vascular tissue
    • seeds

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