Which statement about BT is true?

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Multiple Choice

Which statement about BT is true?

Explanation:
Bt, or Bacillus thuringiensis, is a biological insecticide that is not broad-spectrum. The active toxins produced by Bt are ingested by susceptible larvae and, once in the insect gut, are activated and bind to gut receptors. This interaction creates pores in gut cells, disrupting digestion and gut function, which quickly reduces feeding and leads to death. Because these toxins target specific receptors found only in certain insect groups, Bt affects only some species rather than all pests. It is not a herbicide or a fungicide.

Bt, or Bacillus thuringiensis, is a biological insecticide that is not broad-spectrum. The active toxins produced by Bt are ingested by susceptible larvae and, once in the insect gut, are activated and bind to gut receptors. This interaction creates pores in gut cells, disrupting digestion and gut function, which quickly reduces feeding and leads to death. Because these toxins target specific receptors found only in certain insect groups, Bt affects only some species rather than all pests. It is not a herbicide or a fungicide.

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