Which of the following statements about insect control by microorganisms is true?
a. The insects develop resistance to the microorganisms.
b. The microorganisms are permanent in the environment.
c. The microorganisms are specific for the insect pest.
d. The microorganisms may cause disease in other animals.
e. This technique is just as dangerous as the use of chemical pesticides
Ans: c. The microorganisms are specific for the insect pest.
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