1022ForestryMedium
One of the major difficulties in the biological control of insect pests is that:
AThe method is less effective as compared to the use of insecticides
BThey do not always survive when transferred to a new environment
CThe predator develops a preference to other diets and may itself become a pest
DThe practical difficulty in introducing the predator to specific area
Correct answer
C. The predator develops a preference to other diets and may itself become a pest
Explanation
The correct answer is The predator develops a preference to other diets and may itself become a pest.