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1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -variation in.

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Presentation on theme: "1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -variation in."— Presentation transcript:

1 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -variation in flowers -life cycle

2 Figure 38.2 Review of an idealized flower

3 Figure 38.3a Trillium

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7 Figure 38.3f Sagittaria: staminate flowers (left), carpellate flowers (right)

8 Figure 38.3ex Begonia, a monoecious species

9 Figure 38.3d2 Aloe

10 Figure 38.3b Lupines

11 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -variation in flowers -life cycle

12 Figure 38.1 Simplified overview of angiosperm life cycle

13 Figure 38.3ax2 Lily

14 Figure 38.4 The development of angiosperm gametophytes (pollen and embryo sacs)

15 Dispersed Pollen Grain Generative Cell Tube Cell Pollen Coat 4 Microspores

16 Figure 38.5 Pollen grains have tough, ornate, and distinctive walls

17 Figure 38.3ax1 Lily

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19 Cross Section of an Ovary One ovule just after meiosis

20 Figure 38.4 The development of angiosperm gametophytes (pollen and embryo sacs)

21 Mature female gametophyte Egg Four-nuclear female gametophyte after two mitotic divisions of the megaspore)

22 Figure 38.9 Growth of the pollen tube and double fertilization

23 Figure The development of a dicot plant embryo

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25 Figure The life cycle of an angiosperm

26 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -life cycle -variation in flowers

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29 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -life cycle -variation in flowers

30 Three paths for pollen flow: selfing: 1. Within flower 2. Between flowers 3. outcrossing (between plants)

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32 Red Maple Flowers staminate pistillate

33 Figure 38.3e Maize, a monoecious species

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37 syndromes

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39 Foxgloves and outcrossing

40 Figure 38.3bx1 Foxglove

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42 Female zone Male zone Bees fly up Then start over at the bottom Three components to outcrossing in foxglove 1. Young flowers are male, old are female 2. Young flowers are nearer the top 3. Bees fly up.

43 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -life cycle -variation in flowers

44 -pollination syndromes Hummingbird -- -long tube -red color -abundant nectar - no odor - no landing

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49 -pollination syndromes Bat -- -abundant pollen -white or drab color -abundant nectar - good odor - strong landing

50 Banana (Musa), pollinated by bats, dispersed by monkeys

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53 -pollination syndromes Sphinx Moth -- -long tube -white color -abundant nectar - exquisite odor (periodic) - landing

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55 Angraecum (Orchidaceae)

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58 -pollination syndromes Carrion insect -- -contrasting light and dark pattern -brown-purple color -no nectar - foul odor

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61 1. Review of reproductive biology 2. Pollination Ecology On the Function of Flowers -precise placement -outcrossing -pollination syndromes -life cycle -variation in flowers


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