Which statement correctly describes what Bti represents?

Which statement correctly describes what Bti represents?

• A. Bti Is a Chemical Pesticide
• B. Bti Is Used as a Barrier Treatment
• C. Bti Is a Biological Bacterial Control
• D. Bti Is a Standard Trap

Answer: (C)

Bti represents a biological bacterial control. It’s Bacillus thuringiensis israelensis, a naturally occurring bacterium used as a larvicide against mosquito and black fly larvae. When larvae ingest the bacteria, delta-endotoxin toxins disrupt their gut lining, causing death—targeted to dipteran larvae and with limited non-target impact. It is not a chemical pesticide, a barrier treatment, or a trap, and it’s applied to standing water where larvae develop, affecting only the larval stage rather than adults.

Bti represents a biological bacterial control. It’s Bacillus thuringiensis israelensis, a naturally occurring bacterium used as a larvicide against mosquito and black fly larvae. When larvae ingest the bacteria, delta-endotoxin toxins disrupt their gut lining, causing death—targeted to dipteran larvae and with limited non-target impact. It is not a chemical pesticide, a barrier treatment, or a trap, and it’s applied to standing water where larvae develop, affecting only the larval stage rather than adults.