Chapter 2.1 Energy Transfer And Food Webs. Flashcards
A category of living things defined by how it gains its energy.
Trophic Level.
The first trophic level contains autotrophs, and each higher level contains heterotrophs.
A organism that uses the suns energy a d raw materials to make its own food; a producer.
Autotroph.
In a food chain or a food web, an organism that relies directly on autotrophs for its source of energy; organisms at the second trophic level.
Primary Consumer.
In a food chain or food web, an organism that relies on primary consumers for its principal source of energy; organisms at the third trophic level.
Secondary Consumer.
An organism that is incapable of making its own food, and so must feed on other organism to gain energy.
Heterotroph.
A representation of the feeding relationships among organisms in an ecosystem.
Food Web.
The process by which green plants and some other organisms use solar energy, carbon dioxide, and water to produce carbohydrates.
Photosynthesis.
The process by which cells break down glucose into carbon dioxide and water, releasing energy.
Cellular Respiration.
The process by which non-photosynthetic organisms convert inorganic chemicals to organic compounds without solar energy.
Chemosynthesis.
An organism that can synthesize organic compounds from inorganic chemicals without using solar energy.
Chemoautotroph.
A scientific study of energy transformations, described by laws.
Thermodynamics.
