Question

bacillus thuringiensis is a biological control agent that will control ______.

a. the mexican bean beetle

b. verticillium wilt

c. many caterpillars

d. aphids

Explanation:

Bacillus thuringiensis (Bt) is a bacterium used as a biological control agent. It produces toxins that are specifically effective against many species of caterpillars (larval stage of moths and butterflies). The Mexican bean beetle is controlled by other means, Verticillium wilt is a fungal disease, and aphids are typically controlled by other biological agents or methods, not primarily Bt. So the correct option is the one related to many caterpillars.

Answer:

c. many caterpillars