Question

Which among the following options are correct?

• A. Non-infectious agents spread through vectors.
• B. Malaria is transmitted by a vector.
• C. Mosquitoes can act as a vector.
• D. Female mosquito needs blood in order to lay eggs.

Answer 1

Answer: (B), (C), (D)

The correct options are
B Malaria is transmitted by a vector.
C Mosquitoes can act as a vector.
D Female mosquito needs blood in order to lay eggs.

Vectors are those organisms which carry the disease causing microbe from one person to another. They spread infectious agents. E.g., Malaria which is caused by Plasmodium is transmitted by the bite of female Anopheles mosquito. They feed on warm blooded animals. Since, they need highly nutritious food in the form of blood in order to lay eggs.