diseases and classification class 12 virus diseases protozoan diseases bacterial diseases
Answers
Explanation:
iseases are disorders that affect either a part of, or the entire body by impeding bodily functions. Diseases can be caused due to infectious or non-infectious causes.
Non-infectious causes are generally due to internal factors, genetic irregularities, while infectious diseases are caused by microorganisms which are the infection causing agents.
What are Infectious Diseases?
Infectious diseases are the diseases caused by various pathogenic microorganisms such as virus, bacteria, protozoan, fungi, and other parasites. These infectious diseases can be transmitted by animals, humans, insects or other agents.
Infectious agents are present all around us, and they come in different shapes and sizes. They can be categorized based on some common characteristics. Some are single-celled animals such as fungi, bacteria and viruses. Other multicellular organisms such as worms are known to cause diseases too.
Common Infectious Diseases
The table below gives an idea about various common infectious diseases caused by different pathogens.