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ferns - Seedless Vascular Plants Ferns and their Allies...

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Seedless Vascular Plants Ferns and their Allies
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Learning Objective 6 What features distinguish seedless  vascular plants from algae and  bryophytes?
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Seedless Vascular Plants Have adaptations that algae and  bryophytes lack vascular tissues dominant sporophyte generation  Reproduction depends on water as transport medium for motile sperm cells  (as in bryophytes)
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Learning Objective 7 What are the two phyla of seedless  vascular plants?
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Club Mosses  (Phylum Lycopodiophyta) Sporophytes consist of roots, rhizomes,  erect branches, and microphylls  (leaves)
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Fig. 27-10a, p. 590 Stem Microphyll Vascular tissue Enation Vein Smooth stem Enation Vascular supply to enation Microphyll (one vein)
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Fig. 27-10b, p. 590 Thicker main stem Dichotomous end branches Equal branches Vascular tissue Thinner side branch Dichotomously branching stems Overtopping (unequal branching) Planation (branching in same plane) Webbing of side branch system Megaphyll (many veins)
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Club  Mosses
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Fig. 27-11 (1), p. 591 Nonvascular bryophytes Vascular seedless plants Vascular seed plants Green algal ancestor
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Fig. 27-11 (a-b), p. 591 Strobilus Leaves (microphylls)
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Ferns (Phylum Pteridophyta)   Largest and most diverse group of  seedless vascular plants  Fern sporophyte consists of a rhizome  that bears fronds and true roots  Includes whisk ferns and horsetails 
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Ferns
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Fig. 27-12 (1), p. 592 Nonvascular bryophytes Vascular seedless plants Vascular seed plants Green algal ancestor
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Fig. 27-12a, p. 592
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Fig. 27-12b, p. 592
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Fig. 27-12c, p. 592
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Fern Life Cycle
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Fig. 27-13, p. 593
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