MEDIUM
8th CBSE
IMPORTANT
Earn 100

What are the various ways in which communicable diseases can occur and spread?

Important Questions on Micro-Organisms: Friend and Foe

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 2 - Micro-Organisms: Friend and Foe>Long Answer Type Questions>Q 67
Name any five human diseases caused by micro-organisms. Also name the causative micro-organisms and mode of transmission for each of these diseases.
HARD
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 2 - Micro-Organisms: Friend and Foe>Long Answer Type Questions>Q 67
State the various ways of preventing the occurrence and spreading of communicable diseases.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 2 - Micro-Organisms: Friend and Foe>Long Answer Type Questions>Q 68
What is a vaccine? How does a vaccine work?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 2 - Micro-Organisms: Friend and Foe>Long Answer Type Questions>Q 68
Why are children given vaccination?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 2 - Micro-Organisms: Friend and Foe>Long Answer Type Questions>Q 69
What is meant by 'nitrogen fixation'? State two ways in which nitrogen gas of the atmosphere can be 'fixed' in nature to get nitrogen compounds in the soil.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 2 - Micro-Organisms: Friend and Foe>Long Answer Type Questions>Q 70
Draw a neat, labelled diagram of nitrogen cycle in nature. Which natural phenomenon occurring in the sky is responsible for nitrogen fixation?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 2 - Micro-Organisms: Friend and Foe>Multiple Choice Questions (MCQs)>Q 71
The bread dough rises because of 
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 2 - Micro-Organisms: Friend and Foe>Multiple Choice Questions (MCQs)>Q 72
Yeast is used in the production of