Which one of the following statements best reflects the most logical rational and practical message ...........

English Comprehension Reading Comprehension (C)

Directions for the following : Read the following three passages and answer the items that follow the passages. Your answers to these items should be based on the passages only.

Evolution has endowed caterpillars that feed on corn with a unique ability, they can induce the plant to turn off its defence against insect predators. This helps caterpillars to eat more and grow faster. The agent that causes this effect is the caterpillar's faeces or frass. The find could throw new light on compounds associated with plant response to pathogens like fungi or bacteria.

Which one of the following statements best reflects the most logical, rational and practical message conveyed by the passage?

This questions was previously asked in

UPSC CSAT, Previous year (2024)

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Farmers can use caterpillars to feed on weeds in their crop plantations.

This finding can help in the development of clinically useful antimicrobial compounds.

This finding can help in the development of organic, ecologically sustainable pesticides.

Caterpillars can be genetically modified to be predators of the other plant pests.

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Explanation:

- Option 1: Farmers using caterpillars to feed on weeds is not logical. The passage specifically mentions caterpillars feeding on corn, not weeds.

- Option 2: The passage implies that the finding could inform understanding of plant responses to pathogens. However, this is indirect and not linked directly to antimicrobial compound development.

- Option 3: The passage's insight about caterpillars influencing plant defense could inspire creating organic pesticides. This would be ecologically sustainable, leveraging natural interactions.

- Option 4: Genetically modifying caterpillars to target other pests isn't indicated in the passage. The focus is on natural interaction with corn plants.

Correct Answer: Option 3 - This finding can help in the development of organic, ecologically sustainable pesticides.

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