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6 Cards in this Set

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What are autotrophs?
Organisms that produce their organic molecules from CO2 and other inorganic raw materials obtained from the environment and are the ultimate sources of organic compounds for all nonautotrophic organisms.
What are photoautotrophs?
Organisms that use light as a source of energy to synthesize organic substances.
What are chemoautotrophs?
Organisms that produce their organic compounds without the help of light, obtaining their energy by oxidizing inorganic substances, such as sulfur or ammonia.
What is mesophyll?
The tissue in the interior of a leaf.
What is carbon fixation?
The initial incorporation of carbon into organic compounds.
What are pigments?
Substances that absorb visible light.