EASY
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Rhizobium bacteria performs  fixation.

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Important Questions on General Introduction and Classification of Microorganisms

MEDIUM
Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
What do you mean by symbiosis?
MEDIUM
Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
How do leguminous crops help in increasing soil fertility?
MEDIUM
Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Name the micro-organisms which can fix atmospheric nitrogen in the soil.
MEDIUM
Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
What is fixation of nitrogen?
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Explain the role played by Rhizobium bacteria in increasing the fertility of the soil.
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Lightning is one of the methods of:
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects

Given below is the diagram of a bean root :

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What significant role is played by the structure named in X above in the soil? Briefly discuss how the structure plays this role.

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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
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
Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Describe the nitrogen cycle in nature.
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Name the nitrogen-fixing bacteria present in root nodules of leguminous plants.
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
What is the nitrogen cycle, and why it is important?
MEDIUM
Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
What is the nitrogen cycle and why is it important?
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
The process of nitrogen fixation by bacteria does not take place in the presence of:
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Give two examples of the Symbiotic plants.
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Name two leguminous plants which can fix nitrogen.
MEDIUM
Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Name the microorganisms which can fix atmospheric nitrogen in the soil.
EASY
Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Where do Rhizobium bacteria live? What is their function?
MEDIUM
Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Draw a neat, labelled diagram of nitrogen cycle in nature. Which natural phenomenon occurring in the sky is responsible for nitrogen fixation?
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
Which one of the following helps in nitrogen fixation?
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Science>Biology>General Introduction and Classification of Microorganisms>Useful Microorganisms and Their Effects
In what ways are the Rhizobium bacteria useful to plants?