Regarding assertion and reason, choose the right option. Assertion [A]: Food webs are formed because of complex feeding relationships between organisms. Reason [R]: Most organisms feed at one or more trophic levels in a food chain.
A
Both A and R are true and R explains A
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B
Both A and R are true R does not explain A
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C
A is true and R is false
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D
Both A and R are false
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Solution
The correct option is A Both A and R are true and R explains A Many living organisms are omnivores. It is difficult to place these organisms in a linear food chain. For example, when a bear eats berries, the bear is functioning as a primary consumer but when the same bear eats a plant-eating rodent, the bear is functioning as a secondary consumer. So, the diet of some organisms makes the relationships complex and a food web is formed.