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Session 5 Notes

Session 5 Notes. I. Gymnosperm a. Naked Seed (not enclosed in fruit/flower) b.1. Tend to dominate in high altitudes b.2. Tend to be more woody c. Steps in Reproduction – write down steps from youtube video http://www.youtube.com/watch?v=D9byVQxvMXs.

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Session 5 Notes

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  1. Session 5 Notes I. Gymnosperm a. Naked Seed (not enclosed in fruit/flower) b.1. Tend to dominate in high altitudes b.2. Tend to be more woody c. Steps in Reproduction – write down steps from youtube video http://www.youtube.com/watch?v=D9byVQxvMXs

  2. d. fertilized ovule (mature ovule) e. embryo, food reserves, seed coat f.1.i. 5 months g. 1. Seed provides protection from the environment g.2. Seed coat allows for a period of dormancy until conditions are favorable for germination i. Warmth ii. Moisture

  3. g. 3.i. reduce competition with parent ‘ a. root space b. light g.3.ii. Independence from water for fertilization

  4. Conifers I.a.i. Originated 300 million years ago I.a.ii. Weather became colder and drier I.a.iii. Conifers became xerophytic (dry adapted) I.b.i. Small needle like leaves I.b.ii. Thick cuticle to prevent water loss I.b.iii. Sunken Stomata I.c. evergreens I.d.i. needles

  5. Conifer Diversity b. (tallest tree, about 350 feet) b.ii. 90% of virgin forest c. 30 feet e. flavor gin f. have anti-carcinogenic…Taxol f.i. 6 trees to treat 1 patient g. About 600 species

  6. Economic Uses • Ornamental • Lumber • Pine Nuts • Turpentine • Paper • Any others??

  7. Conifer Diversity b. (tallest tree, about 350 feet) b.ii. 90% of virgin forest c. 30 feet e. flavor gin f. have anti-carcinogenic…Taxol f.i. 6 trees to treat 1 patient g. About 600 species

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