1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise...
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1. Review of reproductive biology
2. Pollination Ecology
On the Function of Flowers
-precise placement-outcrossing-pollination syndromes
-variation in flowers -life cycle
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Figure 38.2 Review of an idealized flower
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Figure 38.3a Trillium
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Figure 38.3f Sagittaria: staminate flowers (left), carpellate flowers (right)
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Figure 38.3ex Begonia, a monoecious species
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Figure 38.3d2 Aloe
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Figure 38.3b Lupines
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1. Review of reproductive biology
2. Pollination Ecology
On the Function of Flowers
-precise placement-outcrossing-pollination syndromes
-variation in flowers -life cycle
![Page 12: 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -variation in.](https://reader038.fdocuments.net/reader038/viewer/2022110116/551a50b6550346a4248b60a5/html5/thumbnails/12.jpg)
Figure 38.1 Simplified overview of angiosperm life cycle
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Figure 38.3ax2 Lily
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Figure 38.4 The development of angiosperm gametophytes (pollen and embryo sacs)
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Dispersed Pollen Grain
Generative Cell
Tube Cell
Pollen Coat
4 Microspores
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Figure 38.5 Pollen grains have tough, ornate, and distinctive walls
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Figure 38.3ax1 Lily
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Cross Section of an Ovary
One ovule just after meiosis
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Figure 38.4 The development of angiosperm gametophytes (pollen and embryo sacs)
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Mature female gametophyte
Egg
Four-nuclear female gametophyte after two mitotic divisions of the megaspore)
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Figure 38.9 Growth of the pollen tube and double fertilization
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Figure 38.10 The development of a dicot plant embryo
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http://gened.emc.maricopa.edu/bio/bio181/BIOBK/BioBookflowersII.html
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Figure 30.17 The life cycle of an angiosperm
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1. Review of reproductive biology
2. Pollination Ecology
On the Function of Flowers
-precise placement-outcrossing-pollination syndromes
-life cycle -variation in flowers
![Page 27: 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -variation in.](https://reader038.fdocuments.net/reader038/viewer/2022110116/551a50b6550346a4248b60a5/html5/thumbnails/27.jpg)
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1. Review of reproductive biology
2. Pollination Ecology
On the Function of Flowers
-precise placement-outcrossing-pollination syndromes
-life cycle -variation in flowers
![Page 30: 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -variation in.](https://reader038.fdocuments.net/reader038/viewer/2022110116/551a50b6550346a4248b60a5/html5/thumbnails/30.jpg)
Three paths for pollen flow: selfing: 1. Within flower 2. Between flowers 3. outcrossing (between plants)
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Red Maple Flowers
staminate
pistillate
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Figure 38.3e Maize, a monoecious species
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syndromes
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Foxgloves and outcrossing
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Figure 38.3bx1 Foxglove
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Female zone
Male zone
Bees fly up
Then start over at the bottom
Three components to outcrossing in foxglove1. Young flowers are male, old are female2. Young flowers are nearer the top3. Bees fly up.
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1. Review of reproductive biology
2. Pollination Ecology
On the Function of Flowers
-precise placement-outcrossing-pollination syndromes
-life cycle -variation in flowers
![Page 44: 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -variation in.](https://reader038.fdocuments.net/reader038/viewer/2022110116/551a50b6550346a4248b60a5/html5/thumbnails/44.jpg)
-pollination syndromes
Hummingbird --
-long tube-red color-abundant nectar- no odor- no landing
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-pollination syndromes
Bat --
-abundant pollen-white or drab color-abundant nectar- good odor- strong landing
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Banana (Musa), pollinatedby bats, dispersed by monkeys
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-pollination syndromes
Sphinx Moth --
-long tube-white color-abundant nectar- exquisite odor (periodic)- landing
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Angraecum (Orchidaceae)
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-pollination syndromes
Carrion insect --
-contrasting light and dark pattern-brown-purple color-no nectar- foul odor
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1. Review of reproductive biology
2. Pollination Ecology
On the Function of Flowers
-precise placement-outcrossing-pollination syndromes
-life cycle -variation in flowers