Chapter 30: Plant Diversity II: The Evolution of Seed Plants

seed_plants Taxol also breast + lung. Quinine not used anymore. Gymno=naked (see Word Roots).
Gymnosperm_cycle Exercise ovule top (scale=sporophyll) integument rite, sporophyll bottom; 2. CONES. Heterosporous.
pollen_tube 2 eggs may be fertilized, but 1 survive.
microspore DIAGRAM DOES NOT SHOW microspores.
megaspore Megasporocyte -> 1/4 meiosis=megaspore. Ovule has 2 archegonia.
flower BANANA, APPLE carpels. Perfect=male + female.
fruit PEANUT EMBRYO. ORANGE=13 carpels. Ovary wall=pericarp. Video: bat drops, agouti buries.
dispersal BURDOCK/MILKWEED/SAMARA. Fruits adapted for seed dispersal.
Angiosperm_cycle Exercise anther top, megasporocyte bottom; 2. Germination: break dormancy.
Angiosperm Grass no petals! Dicots: basal angiosperms (water lilies); magnoliids.
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8eSQ
1=d  2=a  3=b  4=a  5=d
8ePT (hard)
1=e  2=c  3=a  4=D(hard)  5=a
  1. Cycad and Ginkgo have motile sperm that swim.
  2. Pine pollen is trapped by a droplet of liquid at entrance to a chamber which contains the megaspore.
  3. Gnetophyta: (neeTOfita) Vessel-bearing gymnosperms
  4. Ephedra, also called Ma huang: naturally derived from plants. Ephedrine chemically synthesized is regulated as a drug. Promoted to aid weight loss, enhance sports performance, and increase energy. On Dec. 30, 2003, FDA consumer alert.
    February 2003 death of Baltimore Orioles pitcher Steve Bechler, heart palpitations, tremors; stimulant, can raise blood pressure.
  5. Maple fruit: either Acer rubrum or negundo.
  6. Amborella is a basal angiosperm that lacks vessels found in more derived angiosperms (has only tracheids).
  7. Eudicots are “true” dicots, other dicots are basal angiosperms and magnoliids,
    Magnoliids share primitive traits such as spiral arrangement of floral parts with the basal angiosperms.
  8. Acetylsalicylic acid -> aspirin.