OBJECTIVE LIFE SCIENCE
ECOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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one sequence of producers and consumers.
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complex networks of feeding relationships.
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stored energy in food chains
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only primary consumers in an ecosystem
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Detailed explanation-1: -A food web is a graphical model depicting the many food chains linked together to show the feeding relationships of organisms in an ecosystem. It differs from a food chain in a way that the latter is a linear system showing a succession of organisms whereby each species is eaten in turn by another species.
Detailed explanation-2: -A food web is a model that shows the complex network of feeding relationships and the flow of energy within and sometimes beyond an ecosystem.
Detailed explanation-3: -Consumers may be identified by their position in a chain: first order (primary) consumers eat producers; second order (secondary) consumers eat primary consumers; third order (tertiary) consumers eat secondary, and so on along a chain. Consumers high in a food chain do not necessarily eat all species lower down.
Detailed explanation-4: -The food chain, food web, and energy pyramid are all models that show feeding relationships and allow us to make predictions.