Resistance to pests and diseases is often provided by

A. Ca

B. N

C. K

D. Air

Answer: Option C

Solution(By Examveda Team)

Resistance to pests and diseases is often provided by K.
Resistance is defined as a change in the sensitivity of a pest population to a pesticide, failing a correct application of the pesticide to control the pest.
The adequate concentration of potassium nitrate improves plant resistance to pathogens or pests attack boosting tolerance of the crops.