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31 Cards in this Set
- Front
- Back
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Vascular plants
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Tracheophytes (Think: Trachea for breathing)
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Nonvascular plants
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Bryophytes
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Does nonvascular plants have the fewest or most adaptations to terrestrial life?
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The fewest (Think; doesn't have a trachea; missing stuff)
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What are the requirements for nonvascular plants to reproduce?
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It requires moise environment because it has swimming sperm.
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What do nonvascular plants lack?
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Roots, leaves and stems
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Why is the height of nonvascular plants limited?
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Lack stiffening materials (less than an inch high)
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What are the three groups of nonvascular plants?
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Hornworts, liverworts, and mosses.
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Of the nonvascular plants which is the most diverse?
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Mosses
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What are some characteristics of mosses?
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Serves as a waterproof covering, and is dormant when dry.
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Root
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anchor, water, nutrient absorption
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waxy cuticle
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limits evaporation
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stomata
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allows gas exchange limits water loss
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conducting cells
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water up energy molecules down
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What are the reproductive structure in nonvascular plants
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archeonia (egg - mitosis) and antheridia (sperm - mitosis)
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What are the two groups of vascular plants
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Seed and seedless
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What is the dominant stage in vascular plants?
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Sporophyte stage dominant
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Seedless vascular plants requires what for reproduction?
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water
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what is the predominant seedless vascular plants?
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ferns
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How many species of fern are there?
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12,000
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ferns are able to colonize due to what?
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dispersed spores.
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what are the two groups of seeded vascular plants?
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gymnosperms angiosperms
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in regards to seeded vascular plants, what is the male gametophyte
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pollen
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what are seeds composed of?
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embryonic sporophyte plant + food supply + protective outer coat
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what seeds considered to be in until proper condition arises?
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suspended animation
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describe the gametophyte stage?
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tiny, often a few cells (NEVER AN INDEPENDENT PLANT)
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Which seeded vascular plants lack flowers?
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gynosperms
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what are examples of gymnosperms?
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ginkos and conifers
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Which evolved first, angiosperm or gymnosperms?
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gymnosperms
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Describe the pollination efforts of gymnosperms?
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inefficient
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where do conifers dominant?
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northern climates and alpine area
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why are conifers dominants
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evergreens undergo continuous photosynthesis
needles - leaves with waterproof coating sap - antifreeze allows transport despite below freezing |
