Harmful Micro Organism


 
 
Concept Explanation
 

Harmful Micro Organism

Harmful effects of microorganisms can be divided into the following two categories:

• Causing diseases in human beings, animals, and plants

• Food spoilage

Disease-causing Microorganisms: Microorganisms that cause diseases in human beings, animals, and plants are called pathogens. Let us look at some of the diseases caused by pathogens in human beings, animals, and plants.

In human beings pathogens enter the body of a healthy person through air, water, and food. They can also spread from an infected person to a healthy one. For example, when a person suffering from common cold sneezes, pathogens are released into the air. These pathogens may enter the body of a healthy person while breathing and he/she may also get common cold.

Examples : The disease causing microorganism are called as pathogen. They can be bacteria, virus,protozoa etc. Some of the diseases caused by organisms are given below:

1. Disease: Ring Worm

Mode of transmission: Direct contact with the infected person

Causative pathogen:Three genera( Fungus) 

Preventive measures: Good hygiene, not sharing personal items like towels and combs with infected person.

2. Disease: Common cold

Mode of transmission: Air,   

Causative pathogen: Rhinovirus (Virus)

Preventive measures: Washing hands regularly; avoiding close contact with people having common cold

3. Disease: Poliomyelitis 

Mode of transmission: Air and water

Causative pathogen:Polio virus(Virus) 

Preventive measures: Vaccination

Sample Questions
(More Questions for each concept available in Login)
Question : 1

Which of the following correctly describes the size of fungi compared to the size of bacteria?

Right Option : A
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Explanation
Question : 2

Which of the following organisms transmits virus that causes dengue?

Right Option : B
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Explanation
Question : 3

The correct pair of parasites among the following is___________________,

Right Option : A
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Explanation
 
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