The bacterium, Bacillus thuringiensis, is widely used in contemporary biology as
A
Agent for production of dairy products
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B
Source of industrial enzyme
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C
Indicator of water pollution
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D
Insecticide
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Solution
The correct option is D Insecticide Bacillus thuringiensis a gram positive bacteria is used as a pesticide. It acts on many plant-feeding insects. It produces toxins during sporulation that blocks the gut of insects and kills them. Thus, the correct answer is option D.