Question

11. Microorganisms which cause diseases are
called
(a) antigens
(b) antibodies
(c) pathogens
(d) vectors.​

Answer 1

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Microorganisms which causes disease are called pathogens.

Explanation:

More Information

What Is an antigen?

Ans: Antigen is a substance in our body that enables the immune system to produce antibodies to fight against diseases.

What are antibodies?

Ans: Antibodies are the substances that are produced in our body to resist against certain types of diseases.

What are vectors?

Vectors are a kind of organism that spreads disease from an infected person to a healthy person. Eg: Flies, mosquitoes etc.

Answer 2

Answer:

☞ Antigens are substances that cause an immune response in the body by identifying substances in or markers on cells. Your body produces antibodies to fight antigens, or harmful substances, and tries to eliminate them.

Explanation:

»A variety of microorganisms can cause disease. Pathogenic organisms are of five main types: viruses, bacteria, fungi, protozoa, and worms. Some common pathogens in each group are listed in the column on the right.