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GCSE Biology · key term
A feeding position in a food chain, such as producer or primary consumer.
Used by AQA, Edexcel and OCR
Specification 4.7.4.1, 4.7.4.2, 4.7.4.3 · Paper 2
A numbered feeding position occupied by an organism in a food chain.
Revise: Trophic LevelsEach position in the sequence is a trophic level: “trophic” simply refers to feeding.
A feeding position in a food chain, numbered from the producer at trophic level 1.
An organism's feeding position in a food chain.
Specification 9.7B, 9.8B · Paper 2
Revise: Energy Transfer and BiomassEach position is a trophic level. Grass uses light energy in photosynthesis to make food and build new living material. When a rabbit eats grass, some of that material—and the energy stored in it—becomes available to the rabbit.
A feeding position in a food chain, such as producer, primary consumer or secondary consumer.
Specification B4.1h, B4.1i, B4.1j · Paper 2 (Foundation), Paper 4 (Higher)
The feeding position occupied by an organism in a food chain or along a pathway through a food web.
Revise: Trophic levelsA trophic level is a feeding position in a food chain, or in one pathway through a food web. Organisms at different trophic levels differ in how they obtain their food and from which organisms they receive biomass and chemical energy.
A food-chain position occupied by organisms with the same feeding role, such as producers or primary consumers.
A feeding position in a food chain, such as producer, primary consumer or secondary consumer.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
An organism’s feeding position in a food chain.
Revise: Trophic LevelsA trophic level is a feeding position in a food chain. The chain begins with a producer, usually a green plant or alga. Through photosynthesis, producers make glucose and use it to build the biological material, or biomass, that makes up their bodies.
A feeding position in a food chain, such as producer, primary consumer or secondary consumer.
The feeding position occupied by an organism in a food chain or food web.
Use feeding relationships, not an organism's size, to identify its trophic level. Begin with the producer as level 1 and count along the food chain.
Use the total biomass of all organisms at a trophic level, not the mass of one organism.
Place trophic level 1—the producer—at the bottom, even if the data table is presented in a different order.
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