30.1 Alternation of Generations
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The algal sister groups of land plants have one multicellular generation in their life cycle.
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Bryophytes illustrate how the alternation of generations allows the dispersal of spores in the air.
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Dispersal enhances reproductive fitness in several ways.
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Spore-dispersing vascular plants have free-living gametophytes and sporophytes.
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The seed plant life cycle is distinguished by four major steps.
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Pine trees illustrate how the transport of pollen in air allows fertilization to occur in the absence of external sources of water.
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Seeds enhance the establishment of the next sporophyte generation.
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Flowers are reproductive shoots specialized for the transfer and receipt of pollen.
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The diversity of floral morphology is related to modes of pollination.
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Angiosperms have mechanisms to increase outcrossing.
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Angiosperms delay provisioning their ovules until after fertilization.
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Fruits enhance the dispersal of seeds.
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Case 6: How did scientists increase crop yields during the Green Revolution?
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30.4 Asexual Reproduction
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Asexually produced plants disperse with and without seeds.
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