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15 Cards in this Set
- Front
- Back
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What are land plants called?
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Embryophytes
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What are Embryophytes?
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Photosynthetic eukaryotes that develop from embryos protected by parental tissues
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What do they include? (clades)
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3 clades of nonvascular plants and 7 clades of vascular plants
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What is a cuticle?
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Waxy covering that retards desiccation
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What is Gametangia?
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cases that enclose plant gametes and prevent them from drying out
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What is a Antheridium?
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Male reproductive structure
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What is an Archegonium?
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Female reproductive structure
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what are spore walls?
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Thick spore walls contain sporopollenin, a polymer that protects the spores from desiccation and resists decay
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What kind of relationship is there with Fungi?
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Mutualistic relationship with fungi enhances nutrient uptake from soil
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What are some charac. of early land plants?
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nonvascular, no phylem or xylem, lacks leaves, stems, and rooms. restricted to damp enviornments, water required for flagellated sperm to reach egg
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What are some charac. of seedless vascular plants?
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vascular, has phylem or xylem, has leaves, stems ,and rooms.
formed 1st coal deposits |
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What is a gametophyte?
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In plants and photosynthetic protists with alternation of generations, the multicellular haploid phase that produces the gametes.
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What is a sporophyte?
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In plants and protists with alternation of generations, the diploid phase that produces the spores.
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In what system is gametophye larger?
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nonvascular- sporophyte is dependant
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In what system is sporophyte larger?
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vascular- sporophyte is not dependant
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