The following is an Assertion/Reason question. These questions consist of two statements, each printed as Assertion and Reason. Read both statements carefully and then select the correct answer from the options below[table]
Assertion | | Reason The infectious agent responsible for the disease cholera is a gram-negative bacterium | Because | cholera is a diarrhoeal disease
[/table]

Question

The following is an Assertion/Reason question. These questions consist of two statements, each printed as Assertion and Reason. Read both statements carefully and then select the correct answer from the options below[table]
Assertion |  | Reason The infectious agent responsible for the disease cholera is a gram-negative bacterium | Because | cholera is a diarrhoeal disease
[/table]

BlackTom AI · Accepted Answer

The question presents two statements labeled Assertion and Reason and asks you to judge their truth and the relation between them.
Option a: Both the Assertion and Reason are true, and the Reason is a correct explanation of the Assertion. Here, while the Assertion statement about cholera being caused by a gram-negative bacterium is true, the Reason (cholera is a diarrhoeal disease) does not explain why the organism is gram-negative. Therefore, the Reason is not a correctExplanation of the Assertion, so this option is incorrect.
Option b: Both the Assertion and Reason are true, but the Reason is not a correct explanation of the Assertion. This is the precise assessment: cholera is caused by a gram-negative bacterium (true), and cholera is indeed a diarrhoeal disease (true). However, describing cholera as a diarrhoeal disease does not justify or explain why the pathogen is gram-negative; the Reason fails to provide a mechanism or rationale for the Assertion. Thus, this option correctly characterizes the relationship and is the appropriate choice.
Option c: The Assertion is true but the Reason is false. Since the Reason states that cholera is a diarrhoeal disease, which is true, this option mislabels the Reason as false, making it incorrect.
Option d: The Assertion is false but the Reason is true. This contradicts established microbiology knowledge that Vibrio cholerae (the cholera pathogen) is a gram-negative bacterium; hence the Assertion is false, making this option incorrect.
Option e: Both the Assertion and Reason are false. Again, both statements are true in reality, so this option is inconsistent with known facts and is incorrect.

In summary, you evaluate a) through e) by checking truth values and the explanatory link: the correct choice acknowledges both statements as true while noting that the Reason does not explain the Assertion.

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