Biology
Assertion (A): When the disease is widely distributed worldwide, it is termed as a sporadic disease.
Reason (R): Sporadic diseases are not localised, their individual cases are scattered; for example malaria, cholera, etc.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Answer
A is False and R is True.
Reason — Assertion (A) is false because a disease that is widely distributed throughout the world is called a pandemic, not a sporadic disease.
Reason (R) is true because sporadic diseases occur irregularly and in scattered individual cases, rather than affecting a large population at the same time. Malaria and cholera are correct examples of sporadic diseases.
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In hepatitis, the virus causes an inflammation of
- Lung
- Kidney
- Liver
- Stomach
Which of the following statements about HIV is correct?
- HIV primarily attacks red blood cells, leading to anemia.
- HIV weakens the immune system, which can lead to cancer.
- HIV is caused by a bacterium and can be treated with antibiotics.
- HIV infection is detectable immediately after exposure.
Assertion (A): Goitre is a kind of a nutritional deficiency disease as well as metabolic disease.
Reason (R): Goitre is caused due to the deficiency of iron which is also required for the synthesis of thyroxine by thyroid gland.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Assertion (A): The disease-causing germs are called vectors.
Reason (R): The transmission of germs from one person to another is carried out by certain organisms which are termed as vectors.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.