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26 Cards in this Set
- Front
- Back
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Do chlorophytes or charophyceans live symbiotically with fungi as lichens?
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Chlorophytes
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What are three characteristics of chlorophytes?
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Mostly freshwater but some marine, have plant like chloroplasts, and have unicellular and multicellular forms
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Name the five evidences tat charophyceans are the closest ancestors of true plants
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both have same type of cellulose-synthesizing complexes in cell membrane, both have peroxizomes, both have flagellated sperm, form cell plate during cell division, and genetic evidence
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What challenges to plants face when they move to land?
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osmotic pressure, UV rays, new way to access water and retain it, viruses and bacteria (herbivores)
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What are the adaptations that plants made to land
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Apical meristems, alternation of generations, walled spores produced in sporangia, multicellular gametangia, and multicelluluar dependent embryos
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Is the sporophyte generation diploid or haploid? Produced by mitosis or meiosis?
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diploid and produced by mitosis
(undergoes meiosis to form gametophyte) |
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is the gametophyte generation diploid or haploid? Produced by mitosis or meiosis?
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haploid and produced by meiosis (undergoes mitosis and is fertilized to form sporophyte)
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What organ is on the sporophyte that produces spores?
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Sporangia
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____divides to form haploid spores
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sporocytes
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What is a gametangia?
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Multicellular organs within the gametophyte that produce the gametes by mitosis
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Name the gametangia that produces eggs
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Archegonia
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Does the antheridia produce sperm or egg?
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sperm
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Name two nonvascular plants (byrophytes)
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Mosses, liverworts, and hornworts
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Name two seedless vascular plants
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club moss, horsetail, whisk fern, fern
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When were seedless vascular plants abundant?
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in the carboniferous period (290-360 mil years ago)
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What are the five terrestrail adaptations of seed plants?
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seeds replace spores, gametophytes become reduced, heterospory, zygote develops into embryo with food supply in seed coat, and pollen and pollination
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What is an ovule
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female sporangium + female spore. Female gametophyte developes within the spore and produces egg.
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What becomes the seed?
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the ovule
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What is a seed?
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sporophyte embryo + food supply
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What is heterospory?
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where the gametophytes are female and male
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What protects the megasporangia?
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a layer of tissue called integuments
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What is the pollen?
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the male gametophyte
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What are the four phylas of gymnosperms?
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Ginkophyta, Cycadophyta, Gnetophyta, and Coniferophyta
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What is the name of the only phylum of angiosperms?
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Anthophyta
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What are lichens?
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symbiotic association of cyanobacteria or green algae and fungi.
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What is the name of the fungis
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mycorrhizae
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