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10 Cards in this Set
- Front
- Back
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Two Major Groups |
• Vascular (able to transport water and food) • Non-vascular (not able to transfer water and food) |
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Vascular System |
System of transport tissues within the structure of plants that is involved in transporting food and water. |
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Xylem |
Transport tissue involved in transporting water |
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Phloem |
Transport system involved in transporting food |
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Similarities Between Green valley Algae and Plants |
• Contain the same photosynthetic pigment • Store excess carbohydrates as starch • Have cellulose as the major component of the cell wall - Thus, plants evolved from green algae |
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Adaptation Plants Needed for Transition to Land |
• Development of cuticle (protective waxy covering) - holds in water, stops plant from drying. • Development of pores, or stomata (for gas exchange) - points of respiration. • Alteration of generation (special reproductive process) - haploid stage and diploid stage • Multicellular reproductive organs (gametangia and sporangia) • Female plant retains fertilized egg (protects the embryo) |
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Two Stages of Plant Life-History |
• Spend part of their lives in the haploid (n) stage. • Part their life in the diploid (2n) stage. |
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Gametophyte Generation |
• Haploid stage of plant growth. • Gives rise to haploid gametes by mitosis. • Dominant. |
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Sporophyte Generation |
• Diploid stage of plant growth • Gives rise to spores by meiosis • Non-dominant |
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Sex Organs of Both Generations |
• Sporangia - sporophyte sex organ (flowering plants) • Gametangia - gametophyte sex organ (coniferous plants) |
