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Asked by Surya rao Sripathi

Apr 1, 2014

What are useful and harmful microorganisms?

What are useful and harmful microorganisms?

Answers(3)

Answer

Agam Gupta

Member since Sep 21, 2013

Microorganisms are small organisms invisible to the naked eye because of their extremely small size.� They are grouped into various groups like Bacteria, fungi, algae, protozoa and viruses.
Many of these organisms are useful to human and nature while some are harmful and even cause diseases.

Type Useful microorganisms Harmful microorganisms
Bacteria Lactobacillus (curd bacteria) Salmonella typhi (causes typhoid)
Fungi Penicillium notatum (to make antibiotics) Trichophyton rubrum (Athlete's foot)
Algae Anabaena (biological nitrogen fixation) blue-green algae and red tides (produce toxins)
Protozoa Paramecium (kills harmful bacteria) Plasmodium (malaria fever)
Virus polio, chicken pox (to make vaccines) HIV (causes AIDS)

Harmful effects of microorganisms:�
Bacteria: Causes various diseases such as typhoid, diarrhea, and cholera.
Fungi: Causes a large number of diseases in plants and in animals such as rust diseases in plants, fruit rot in apple, red rot in sugar cane and ring worm disease in human beings.
Algae: Algal boom in water (rapid growth of algae) causes poisonous effect after they die, which in turn results in the death of aquatic organisms.
Protozoa: Causes Amoebic dysentery, pyorrhoea and sleeping sickness etc.
Virus: Cause small fox, common cold, influenza, herpes, hepatitis, polio and rabies

Sara Batool Hussain

usefull microorganisms help us to make medicines and other things while harmfull one distroy our body

Surya rao Sripathi

Microorganisms are small organisms invisible to the naked eye because of their extremely small size.  They are grouped into various groups like Bacteria, fungi, algae, protozoa and viruses.
Many of these organisms are useful to human and nature while some are harmful and even cause diseases.
 
Type Useful microorganisms Harmful microorganisms
 
Bacteria Lactobacillus (curd bacteria) Salmonella typhi (causes typhoid)
Fungi Penicillium notatum (to make antibiotics) Trichophyton rubrum (Athlete's foot)
Algae Anabaena (biological nitrogen fixation) blue-green algae and red tides (produce toxins)
Protozoa Paramecium (kills harmful bacteria) Plasmodium (malaria fever)
Virus polio, chicken pox (to make vaccines) HIV (causes AIDS)
 
Harmful effects of microorganisms:
Bacteria: Causes various diseases such as typhoid, diarrhea, and cholera.
Fungi: Causes a large number of diseases in plants and in animals such as rust diseases in plants, fruit rot in apple, red rot in sugar cane and ring worm disease in human beings.
Algae: Algal boom in water (rapid growth of algae) causes poisonous effect after they die, which in turn results in the death of aquatic organisms.
Protozoa: Causes Amoebic dysentery, pyorrhoea and sleeping sickness etc.
Virus: Cause small fox, common cold, influenza, herpes, hepatitis, polio and rabies.
 
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