EASY
8th CBSE
IMPORTANT
Earn 100

Are all microorganisms harmful?

Important Questions on Microorganisms : Friends and Foes
EASY
8th CBSE
IMPORTANT
Name any two diseases caused by bacteria.

MEDIUM
8th CBSE
IMPORTANT
Differentiate between aerobic and anaerobic bacteria.

MEDIUM
8th CBSE
IMPORTANT
Algae are plant-like while protozoa are animal-like microorganisms. Explain.

MEDIUM
8th CBSE
IMPORTANT
Microscopic algae sustain life on the Earth. How?

MEDIUM
8th CBSE
IMPORTANT
Phytoplanktons live near the surface of water. Why?

EASY
8th CBSE
IMPORTANT
Why do dry food items such as biscuits not spoil easily?

EASY
8th CBSE
IMPORTANT
List three diseases caused by microorganisms. Explain the symptoms of any one disease.

EASY
8th CBSE
IMPORTANT
Explain pasteurisation.
