Ima

2 . 5

Points

1. What is the meaning organisms ?

ANS : Organisms are living things that means they can breath , grow , move , eat , and reproduce .

2. What is micro ?

   ANS : The word 'micro' means very very small .

   so small that you can't see with your eyes you can only see with a microscope .

3. We can see micro - organisms with a microscope is that why the name micro came in the word microscope ?

   ANS :The word microscope has two parts :

   1. micro = small

   2. scope = look or see

4. In what ways micro - organisms useful

   ANS : 1. Food : They help make curd , Cheese , bread and idly .

   2. in soil

   3. in medicine

   4 . In cleaning waste

5. In what ways are they harmless ?

   ANS: Normally micro - organisms are harmless . They don't hurt use .

6. What are the names of micro - organisms that makes people ill ?

   ANS : bacteria , fungi , protozoa , viruses

7. how are they reproducing in our body ?

   ANS : Bacteria - They divid in to two

   viruses - They can't reproduce

   3. Fungi - They grow tiny spores .

   4. protozoa - They divid or make more protozoa .

8. What is toxin ?

   ANS : A toxin is a poison made by some micro - organisms .

9. What is meant by disease ?

   ANS : disease means an illness or sickness .

10. What is infection ?

    ANS : An infection happens when a bacteria enters our body .

11. What is TB ?

    ANS : It is a disease caused by bacteria.

12. What is antibiotics?

    ANS: Antibiotics are medicines that kills harmful bacterias.

13. Malaria - Is a disease caused by small micro organisms called protozoa.