Which of the following statements is/are correct regarding biopesticides? 1. They are not hazardous to human health. 2. They are persistent in environment. 3. They are essential to maintain the biodiversity of any ecosystem. Select the correct answer using the code given below

Statement 1: "They are not hazardous to human health." This statement is generally correct. Biopesticides are derived from natural materials (animals, plants, bacteria, minerals) and are specifically chosen for their low toxicity to humans and other non-target organisms, making them a safer alternative to conventional chemical pesticides.

Statement 2: "They are persistent in environment." This statement is incorrect. A key advantage of biopesticides is their biodegradability and short residual effect. They break down relatively quickly in the environment, unlike many synthetic chemical pesticides which can be persistent organic pollutants.

Statement 3: "They are essential to maintain the biodiversity of any ecosystem." This statement is incorrect. While biopesticides are generally more environmentally friendly and can help reduce the negative impact of pest control on biodiversity compared to chemical pesticides, stating they are "essential to maintain the biodiversity of any ecosystem" is an overstatement. Biodiversity is maintained by a complex interplay of natural factors, and while sustainable practices (including biopesticides) can contribute positively, they are not universally "essential" for the maintenance of biodiversity in every ecosystem. Many ecosystems thrive without any human intervention, including biopesticide application.

Based on the analysis, only statement 1 is correct.

The final answer is A.