[Campbell Biology P.887] According to the provided text, which of the following statements a... | Practice Question

According to the provided text, which of the following statements about Bt toxin and its application in crops is correct?

  • A: Bt toxin is toxic to both insects and vertebrates because it denatures proteins in acidic environments.
  • B: The Bt toxin is produced in crops as an active toxin that directly kills insect pests upon ingestion.
  • C: Bt maize suffers little or no damage from insect feeding and Fusarium mold infection, unlike non-Bt maize.
  • D: The safety of Bt toxin for humans is still under debate, with no definitive conclusions reached.

Explanation

Figure 38.17 and its accompanying text explicitly state that 'non-Bt maize left is heavily damaged by insect feeding and Fusarium mold infection, whereas Bt maize right suffers little or no damage.' This highlights the effectiveness of Bt maize in resisting pests and molds.