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Question

Regarding assertion and reason, choose the correct option
Assertion [A]: All life on earth derives energy from plants
Reason [R]: Plants are the primary producers being able to produce their own food. All living organisms are directly or indirectly dependant on plants for food

A
Both A and R are true and R explains A
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B
Both A and R are true but 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
All living organisms need energy, from the smallest bacteria to the largest mammals. Plants are the only organisms that can manufacture their own food from nonliving sources by the process of photosynthesis. Herbivores survive on plants for food and derive their energy from plants. Carnivores or flesh eating animals in turn depend on herbivores, therefore they indirectly derive energy from plants.

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