Microorganisms friends and foe Worksheet-1
Fill in the blanks:
The living organisms which cannot be seen with naked eyes are called_______.
________can reproduce only inside the cells of the host organisms.
Common cold, influenza and most coughs are caused by _______.
Typhoid is caused by _____.
_______ is the carrier of malarial parasite.
Microorganisms can be seen with the help of a ________.
Blue-green algae fix ______ directly from air to enhance fertility of soil.
Alcohol is produced with the help of an organism _______.
Microorganisms friends and foe Worksheet-2
Fill in the blanks:
Meat and fish are covered by ______ to check the growth of microorganisms.
In jams and jellies sugar reduces ______ content which inhibits the growth of bacteria.
In _______ the milk is heated to about 70ºC for 15 to 30 seconds and then suddenly chilled and stored.
The most common carrier of communicable disease is _____.
Pickles are preserved by adding ______ or ________.
Citrus canker is caused by ________.
_______ is dangerous human and cattle disease caused by bacterium.
Anthrax is dangerous human and cattle disease caused by______.
Microorganisms friends and foe Worksheet-3
Match the organisms in Column I with their action in Column II.
