Botany Lab Prep SEEDLESS VASCULAR PLANTS BIO 201 - BOTANY.
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Botany Lab Prep
SEEDLESS VASCULAR PLANTS
BIO 201 - BOTANY
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Taxonomy
• Division Lycophyta – club mossesLycopodium and Selaginella* microphylls* one sporangium per sporophyll
• Division Sphenophyta – horsetails* microphylls (not photosynthetic)* sporangia clustered into strobili
• Division Polypodiophyta – fernsaka Pteridophyta* megaphylls* many sporangia per sporophyll
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Lycophyta - Lycopodium
• True vascular tissue (root, stem, leaf)
• Leaves as microphylls
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Lycopodium
• All microphylls alike
• Spores on microphylls or strobili
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Lycophyta - Selaginella
• Anisphyllous microphylls
• Stobili present
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Lycophyta – slide materail
• Rhizome x.s.
• Lycopodium strobilus l.s.
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• Sporophyll(whole thing)
• Sporangium(rounded object)
• Spores(small, red)
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Sphenophyta - horsetails
•
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Polypodiophyta - ferns
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• Fern fronds
• Fiddlehead
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• Fern frond with sprangia
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Sorus types:• Naked• Marginal• Umbrella
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