Microorganisms Class 8

Microorganisms are also known as

• Microscopes

• Microbes

• Viruses

• Microcells

How many types of Microorganisms are there?

• 8

• 9

• 4

• 2

Can Microorganisms seen with naked eye?

• Yes

• No

Which microorganism help us in making curd?

• Penicillium

• Lactobacillus

• Azotobacter

• Algae

The process of conversation of sugar into alcohol is known as

• Dehydration

• Fermentation

• Pasteurisation

• Preservation

The most common carrier of communicable diseases is

• ant

• housefly

• dragonfly

• spider

Blue green algae fix ____ directly from air and enhance fertility of soil.

• Carbon Dioxide

• Methane

• Oxygen

• Nitrogen

Disease causing Microorganisms are called ____.

• Rhizobium

• Azotobacter

• Pathogens

• Blue green algae

Which of these is the picture of the Covid-19 Virus?

• 
• 
• 
• 

The medicines which kill or stop the growth of disease causing Microorganisms are called _____.

• Antibiotics

• Antivirus

• antibodies

• Medicine