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20 Cards in this Set
- Front
- Back
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Are plantae heterotrophic or autotrophic?
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autotrophic
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How has plants added to the world?
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oxygen by means of photosynthesis
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What are ancestors of plants?
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green algae and charophytes
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What are the 4 things that cause plants a hard time to live on land.
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1.no nutrients are above ground,
2.no support in he air 3.air dyhydrates plants, and 4.reproduction is more difficult. |
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What are the the adaptions plants have that let plants live on land? (5)
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1.cuticle,
2.stomata, 3.lignin, 4.vasular tissue and 5. Alternation of Generations. |
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What is the cuticle of the plant?
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waxy coating that helps water stay in.
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What is the stomata of the plant?
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specialized spores that are like windows that are needed for gas exchange
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What does the lignin do for the plant?
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cell wall support
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What are two examples of vascular tissue in plants?
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Xylem and Phloem
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Why are vacular tissue so important?
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it the superhighway that lets plants get all their nutrients and water.
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What does xylem do?
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It helps bring water up from the roots
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What does phleom do?
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It helps bring nutrients down to roots
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What are the 4 main groups of plants?
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1. bryophytes
2.seedless vascular plants 3. gymnosperms 4. angiosperms. |
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What are the 2 vascular tissues that help plants move their nutrients around?
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1. xylem
2.phloem |
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What does lignin do for the cell wall of a plant?
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gives strength
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What is the plants life cycle called?
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alternation of generations.
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Define alternation of generations
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multicellular diploid stage alternates with a multicellular haploid stage
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What is a sporophyte?
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is the diploid generation that develops from a zygote that forms when gametes come together at fertilization.
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What does a mature sporophyte go through to produce haploid spores?
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meiosis
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A gametophyte is formed because of what kind of division?
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mitosis
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