Q. With reference to Bats, consider the following statements:
1. Bat droppings (guano) mined from caves are widely used as a fertilizer for agricultural crops.
2. Bats are reservoirs for viruses, and they fall sick frequently.
3. When bats are stressed, they shed more viruses they carry.
Which of the statements given above is/are correct?

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3

Answer: C
Notes:

Statement 1 and 3 are correct. 

Statement 2 is incorrect: Bats are reservoirs for viruses, but they never fall sick. They have the ability to limit excessive inflammatory response which ensures they do not overreact to viral infections and protects them from multiple chronic age-related diseases. 

SourceEcological Significance of Bats – Explained, pointwise