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  2. Question
  3. Biology
  4. Select the correct option: Pathogens are- I. Normally non-disease causing in nature. II. Bacteria, viruses, fungi, protozoans, helminths are a few examples of pathogens. III. It causes harm to the host by living in (or on) them.

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Q. Select the correct option:
Pathogens are-
I. Normally non-disease causing in nature.
II. Bacteria, viruses, fungi, protozoans, helminths are a few examples of pathogens.
III. It causes harm to the host by living in (or on) them.

NTA AbhyasNTA Abhyas 2022Human Health and Disease

Solution:

The plants and animals are constantly infected by bacteria, viruses, fungi, protozoans, helminths, etc. Such disease-causing microbes are known as pathogens. The plant and animal act as hosts for these parasites. Most of the pathogens can spread the infections through vectors. Thus, we should always take precautions to avoid such infections.