Question

Assertion :Escherichia coli, Shigella sp. and Salmonella sp. are all responsible for diarrhoeal disease. Reason: Dehydration is common to all types of diarrhoeal diseases and adequate supply of fluids and electrolytes are ensured.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
• C. Assertion is correct but Reason is incorrect.
• D. Both Assertion and Reason are incorrect.

Answer 1

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

Shigella is a common cause of intestinal illness in the tropics. They can cause diarrhoea, cramping and fever. Most cases are minor, but these infections can be quite severe, especially in the young, the pregnant or those with compromised immune systems. Salmonella are carried by reptiles, birds and wild rodents. Salmonellosis is one of the most common causes of diarrhoea and food poisoning in man. Escherichia coli is one of the most common intestinal bacteria and is a normal part of every mammal's intestinal flora. Disease caused by pathogenic strains of E. coli is most likely to be seen in cattle, swine and humans.