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19 Cards in this Set
- Front
- Back
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Where do plants acquire most of their oxygen? |
Root |
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Where do plants acquire most of their carbon dioxide? |
Shoot |
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Where do plants acquire most of their water? |
Roots |
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What is the function of the Epidermis? |
Protection |
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What is the function of the Pericycle? |
new roots arise |
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What is the function of the Endodermis? |
regulate water loss and gain |
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What is the Casparian Strip? |
Waxy layer that helps control what goes into the vascular tissue |
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How is Xylem sap transported? |
Transpiration-cohesion-tension |
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What are the steps to the transpiration-cohesion-tension mecnanism? |
Enter root through osmosis Cohesion and Adhesion through the xylem Continuous columns of water in the xylem Transpiration occurs because the water diffuses out of the stomata |
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What are the functions of guard cells? |
They help to regulate the rate of transpiration by opening and closing the stomata |
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What is the function of Phloem Sap? |
Transports water/sugars from a source to a sink (pressure flow) |
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What are the the components of the pressure flow mechanism? |
Sugars enter the Phloem from the source cell Water enters the Phloem from the source cell Sugars enter the sink cell from the Phloem Water enters the sink cell and goes to the Xylem |
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What are essential elements? |
Elements that are required for growth |
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What are the most important six macronutrients? |
Carbon Hydrogen Oxygen Nitrogen Sulfur Phosphorus |
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What are fertilizers? |
Something applied to a plant to provide nutrients for growth |
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What is the N-P-K ratio? |
Ratio of Nitrogen Phosphorus and Potassium |
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What is Nitrogen Fixation? |
Converting N2 to ammonia |
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What are mycorrhiza? |
Mutualist relationship between the fungus that grows with the roots of the plants |
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What are root nodules for? |
Ensures the ability to fix nitrogen to a more usable form |
