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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

Write Short (2-3 Sentences) Note on Pathogen.

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प्रश्न

Write short (2-3 sentences) note on pathogen.

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उत्तर

The germs that cause diseases to human beings and to other animals and plants are called pathogens. They spread the diseases from person to person or through the air or through the articles of the diseased persons. Pathogens may be different kinds of bacteria, viruses, fungi, protozoans or worms.

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पाठ 8: Diseases and First Aid - Short Answer Questions [पृष्ठ ८०]

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सेलिना Concise Biology [English] Class 8 ICSE
पाठ 8 Diseases and First Aid
Short Answer Questions | Q 3.3 | पृष्ठ ८०

संबंधित प्रश्‍न

Write very briefly about the following

Incubation period


Name the following: 

Two diseases caused due to deficiency of protein in the diet of a child


Given below is a crossword puzzle. Read the clues across and clues down, and fill up the blank squares. Check up your performance with the correct solution given at the end.

Clues across

1. Category of pathogen that causes diseases, like common cold and mumps.

5. This is the vaccine for preventing tuberculosis.

6. An organ usually affected by tuberculosis

7. Jumbled spelling of one of the most common insect which visits our exposed foods and contaminates them.

8. Cover this part of your body by a handkerchief while sneezing to prevent droplet infection to others.

9. These may readily grow in your hair, if you do not wash it regularly.

10. A disease that weakens body’s defence system against infections. 

Clues down

1. Germ or germ-substance introduced into the body to prevent occurrence of an infectious disease.

2. A disease caused by an infected dog, and which affects the central nervous system.

3. A disease in which the eyes, the skin and the urine turn yellow.

4. The disease pertussis is popularly known as whooping 

1  V   2 U     3 4
            A O
    5  B       U  
        6  L     G
7  I S   F       H
8   S       I  
E       9 I C  
  10 A   D     E  

Fill in the blank:

Food poisoning is caused by ______.


Find the odd one out, giving reasons:


Name the diseases caused by PEM.


Give the first aid measures in case of second degree burns.


Who gave the ‘germ theory of disease’?


Explain the different types of diseases.


Which one of the following is not a bacterial disease?


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