EASY
8th Jammu and Kashmir Board
IMPORTANT
Earn 100

The bread or idli dough rises because of

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Important Questions on Microorganisms : Friend and Foe

EASY
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 1 - Microorganisms : Friend and Foe>Exercises>Q 2
The process of conversion of sugar into alcohol is called
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 1 - Microorganisms : Friend and Foe>Exercises>Q 3

Match the organisms in Column A with their action in Column B.

Column A Column B
(i) Bacteria (a) Fixing nitrogen
(ii) Rhizobium (b) Setting of curd
(iii) Lactobacillus (c) Baking of bread
(iv) Yeast (d) Causing malaria
(v) A protozoan (e) Causing cholera
(vi) A virus (f) Causing AIDS
  (g) Producing antibodies.
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 1 - Microorganisms : Friend and Foe>Exercises>Q 4
Can microorganisms be seen with the naked eye? If not, how can they be seen?
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 1 - Microorganisms : Friend and Foe>Exercises>Q 5
What are the major groups of microorganisms?
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 1 - Microorganisms : Friend and Foe>Exercises>Q 6
Name the microorganisms which can fix atmospheric nitrogen in the soil.
HARD
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 1 - Microorganisms : Friend and Foe>Exercises>Q 7
Write 10 lines on the usefulness of microorganisms in our lives.
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 1 - Microorganisms : Friend and Foe>Exercises>Q 8
Write a short paragraph on the harms caused by microorganisms.
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 1 - Microorganisms : Friend and Foe>Exercises>Q 9
What are antibiotics? What precautions must be taken while taking antibiotics?