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Definition
| AKA Primary producers - organisms that produce organic material from inorganic chemicals and some source of energy. |
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Term
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Definition
| AKA Secondary producers/consumers - organisms that are unable to manufacture their own food from inorganic molecules and thus rely on other organisms, living and dead, as a source of energy and nutrients. |
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Term
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Definition
| Use of light energy by plants and animals to changes in relative duration of light and dark. |
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Term
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Definition
| Metabolic assimilation of oxygen, accompanied by production of carbon dioxide and water, release of energy, and breakdown of organic compounds. |
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Definition
| the difference between the rate of carbon uptake in photosynthesis and carbon loss in respiration. |
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Definition
| Depth of water or level of light at which photosynthesis and respiration balance each other. |
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Definition
| Amount of light at which plants achieve the maximum rate of photosynthesis. |
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Definition
| Pores in the leaf or stem of a plant that allow gaseous exchange between the internal tissues and the atmosphere. |
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Term
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Definition
| Ratio of net primary production to transpiration of water by a plant. |
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