Directions : In the following questions a statement of assertion (A) ...
Assertion (A) is true, but reason (R) is wrong as Bt toxin is produced by a bacterium called Bacillus thuringiensis.
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Directions : In the following questions a statement of assertion (A) ...
Assertion (A) : ‘Bt’ in Bt toxin represents Bacillus thuringiensis.
Reason (R) : ‘Bt’ toxin is produced by a virus.
The correct answer is option 'A', which states that both the assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
Explanation:
Assertion (A): ‘Bt’ in Bt toxin represents Bacillus thuringiensis.
Reason (R): ‘Bt’ toxin is produced by a virus.
Understanding the Assertion:
- The assertion states that 'Bt' in Bt toxin represents Bacillus thuringiensis.
- Bacillus thuringiensis (Bt) is a gram-positive, soil-dwelling bacterium that produces crystal proteins toxic to certain insect pests.
- These crystal proteins, known as Bt toxins, are naturally occurring insecticides.
Understanding the Reason:
- The reason states that 'Bt' toxin is produced by a virus.
- This statement is incorrect. Bt toxins are not produced by a virus, but by the bacterium Bacillus thuringiensis.
- Bt toxins are produced within the bacterium as crystalline inclusions during sporulation.
Explanation of the Correct Answer:
- Both the assertion and reason are true, but the reason does not provide the correct explanation for the assertion.
- The assertion states that 'Bt' in Bt toxin represents Bacillus thuringiensis, which is true.
- However, the reason states that 'Bt' toxin is produced by a virus, which is incorrect.
- Bt toxins are produced by the bacterium Bacillus thuringiensis, not a virus.
- Therefore, option 'A' is the correct answer.
To summarize, the assertion that 'Bt' in Bt toxin represents Bacillus thuringiensis is true. However, the reason that 'Bt' toxin is produced by a virus is incorrect. Bt toxins are produced by the bacterium Bacillus thuringiensis.
Directions : In the following questions a statement of assertion (A) ...
Option C is the correct answer
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