Question

Assertion (A): Villi are present on the inner surface of small intestine. They help in absorbing digested food into the blood of a person.

Reason (R): The formation of small cavities (or holes) in the teeth due to the action of acid-forming bacteria and improper dental care is called dental caries.

Options

• Both A and R are true and R is correct explanation of the assertion.

• Both A and R are true but R is not the correct explanation of the assertion.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true but R is not the correct explanation of the assertion.

Explanation:

• Assertion (A) is true: Villi are present in the small intestine and absorb digested food into the blood.
• Reason (R) is true: Dental caries is the formation of cavities in teeth due to acid-producing bacteria and poor dental hygiene.