Question

Vectors can be defined as

• A. animals carrying the infecting agents from sick person to another healthy person
• B. microorganisms which cause many diseases
• C. infected person
• D. diseased plants

Answer 1

The correct option is A

animals carrying the infecting agents from sick person to another healthy person

The correct option is A.

Explanation of the correct option:

1. Vector-borne diseases are illnesses spread through vectors.
2. A vector is a carrier of the causative microbe for various diseases such as mosquitoes, ticks and fleas.
3. A vector is an organism (known as arthropod vectors) that carries and transmits any infectious pathogen from an amplifying host to other living organisms.
4. These vectors may be parasites or other microbes.
5. The diseases spread by vectors are: Dengue, Malaria, Giardia, Leishmaniasis, Trypanosomiasis, Filariasis, etc.

Explanation of the incorrect options:

Option B:

Microorganisms that cause diseases are known as pathogens.

Option C:

An infected person who can infect a healthy person with the disease is not known as a vector.

Option D:

Diseased plants are not known as a vector.

Hence, vectors can be defined as animals carrying the infecting agents from sick person to another healthy person.