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Question

Assertion :Non - autotrophic bacteria carry out chemosynthesis. Reason: Chemosynthetic bacteria trap small amount of energy released from oxidation of inorganic compound to use in the reactions that synthesize carbohydrates.

A
If both the assertion and the reason are true and the reason is a correct explanation of the assertion
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B
If both the assertion and reason are true but the reason is not a correct explanation of the assert!on
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C
If the assertion is true but the reason is false
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D
If both the assertion and reason are false
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Solution

The correct option is D If both the assertion and reason are false
Chemosynthetic bacteria are without photosynthetic pigments. For the synthesis of their own organic food (carbohydrates), they obtain carbon from CO2 of the atmosphere, necessary energy from oxidation of inorganic or organic compound (Fe2+), molecular hydrogen (H2) ammonia (NH3) and nitrites (NO2) etc.

So, If both the assertion and reason are false.

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