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Which of the following is a correct representation of a food chain involving chemical equations?

Option: 1

\text{CO}_2 + \text{H}_2\text{O} \rightarrow \text{C}_{6}\text{H}{_{12}}\text{O}_6 + \text{O}_2 \rightarrow \text{rabbit} \rightarrow \text{fox}


Option: 2

\text{N}_2 + \text{H}_2 \rightarrow \text{NH}_3 \rightarrow \text{plants} \rightarrow \text{insects} \rightarrow \text{birds}


Option: 3

\text{CH}_4 + \text{O}_2 \rightarrow \text{CO}_2 + \text{H}_2\text{O} \rightarrow \text{deer} \rightarrow \text{wolf}


Option: 4

\text{H}_2\text{S} + \text{O}_2 \rightarrow \text{SO}_4^{2-} + \text{H}_2\text{O} \rightarrow \text{algae} \rightarrow \text{fish}


Answers (1)

best_answer

This represents a food chain in which hydrogen sulphide and oxygen combine to form sulphate and water, which is used by algae to produce organic matter, which is then consumed by fish. This is a common process in some aquatic ecosystems, such as hydrothermal vents. Hence, the correct answer is option 4. 

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chirag

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