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Exam details
A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another, from producers to top consumers.
A food web is a complex, interconnected network of multiple food chains within an ecosystem, showing how energy flows through many pathways.
A producer (autotroph) is an organism, such as a plant or alga, that synthesizes its own food from inorganic substances using photosynthesis or chemosynthesis.
A primary consumer is an herbivore that feeds directly on producers, occupying the second trophic level in a food chain.
A secondary consumer is a carnivore or omnivore that feeds on primary consumers, occupying the third trophic level.