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7 Cards in this Set
- Front
- Back
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C3 Plants |
A plant that uses the Calvin Cycle for the initial steps that incorporate CO2 into organic material, forming a three-carbon compound as the first stable intermediate. |
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Photorespiration |
A metabolic pathway that consumes oxygen, releases carbon dioxide, generates no ATP, and decreases photosynthetic output; generally occurs on hot, dry, bright days, when stomata close and the oxygen concentration in the leaf exceeds that of carbon dioxide. |
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Bundle-Sheath |
A protective covering around a leaf vein, consisting of one or more cell layers, usually parenchyma. |
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Mesophyll Cell |
A loosely arranged photosynthetic cell located between the bundle sheath and the leaf surface. |
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PEP Carboxylase |
An enzyme that adds carbon dioxide to phosphoenolpyruvate (PEP) to form oxaloacetate. |
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Crassulacean Acid Metabolism (CAM) |
A type of metabolism in which carbon dioxide is taken in at night and incorporated into a variety of organic acids. |
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CAM Plant |
A plant that uses crassulacean acid metabolism, an adaptation for photosynthesis in arid conditions, first discovered in the family Crassulaceae. Carbon dioxide entering open stomata during the night is converted into organic acids, which release CO2 for the Calvin Cycle during the day, when stomata are closed. |
