UPSC Prelims 2017 · CSAT (Paper 2) · Q48

Comprehension

Medium · Validity of statements

Naturally derived pest-control compounds, called biopesticides, generally decompose within days in the presence of sunlight and soil microbes, unlike many synthetic pesticides which persist for months or years. This rapid breakdown limits their accumulation in the wider food chain.

Which of the following statements is/are correct regarding biopesticides?

1. They decompose quickly in the presence of sunlight and soil microbes.

2. They persist in the environment for extended periods.

3. Their rapid breakdown limits accumulation in the food chain.

Select the correct answer using the code given below.