Question:
Cotton is protected from boll worm by using bacterium ______________.
Cotton is protected from boll worm by using bacterium ______________.
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Bt cotton is a transgenic crop expressing Cry toxin genes.
Updated On: Mar 28, 2026
- Escherichia coli
- Bacillus thuringiensis
- Rhizobium leguminosarum
- Salmonella typhimurium
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding boll worm control.
Boll worm is a major insect pest of cotton that damages bolls and reduces yield.
Step 2: Role of Bacillus thuringiensis (Bt).
Bacillus thuringiensis produces crystal (Cry) proteins which are toxic to insect larvae when ingested.
Step 3: Mechanism of action.
Cry proteins destroy the gut lining of boll worm larvae, leading to their death without harming humans or plants.
Step 4: Conclusion.
Therefore, cotton is protected from boll worm by using Bacillus thuringiensis.
Boll worm is a major insect pest of cotton that damages bolls and reduces yield.
Step 2: Role of Bacillus thuringiensis (Bt).
Bacillus thuringiensis produces crystal (Cry) proteins which are toxic to insect larvae when ingested.
Step 3: Mechanism of action.
Cry proteins destroy the gut lining of boll worm larvae, leading to their death without harming humans or plants.
Step 4: Conclusion.
Therefore, cotton is protected from boll worm by using Bacillus thuringiensis.
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