Question

Read the following statements carefully.
(i) Cholera is a bacterial disease, which is mainly caused by contaminated water.
(ii) Malaria is caused by female Anopheles mosquitoes.
(iii) Heart defects can be present because of congenital defects.
(iv) Antibiotics block the biochemical pathways of a virus. Which of the above statement(s) is/are correct?

• A. (i), (ii), and (iii) only
• B. (ii) and (iii) only
• C. (iii) and (iv) only
• D. (iii) and (iv) only

Answer 1

The correct option is A (i), (ii), and (iii) only

Vibrio cholerae is a bacteria that causes cholera through contaminated water.
Malaria is a protozoa, which needs a carrier to complete its life cycle. Anopheles mosquitoes can transfer the pathogen to human beings to complete the sexual reproduction phase of its life cycle. Heart defects can occur during the developmental stages of an embryo. Hence, the defects that are present from the time of birth are known as congenital defects.
Antibiotics are ineffective in viral infections.