Question

Which of the following is not an air-borne disease?

• A. Black stem rust of wheat
• B. Coffee rust
• C. Blast of rice
• D. Potato mosaic disease

Answer 1

The correct option is D Potato mosaic disease

An airborne disease is any disease that is caused by pathogens and transmitted through the air. Potato virus is transmitted by aphids by sticking to aphid mouth parts (stylet). The virus can be acquired from the infected plant within seconds, and transmitted to a healthy plant very fast. It can also be transmitted mechanically by machinery, tools, and damaging plants while walking through the field. Aphids are by far the most efficient means of transmission.

Therefore, the correct answer is option D.