MEDIUM
Earn 100
Write the definition of retting?
Important Questions on Microorganisms
EASY
Write the quadrants in which the following points lie:
MEDIUM
Give two uses of fungi for human beings.
MEDIUM
Not all microorganisms are harmful. Explain the statement with examples.
EASY
Give reasons for the following:
Dead animal body starts emitting foul smell after sometime.
MEDIUM
What do you understand by nitrogen fixation?
MEDIUM
Bacteria called _____ fix nitrogen for leguminous plants.(Rhizobium/Pseudomonas)
HARD
State the beneficial effects (or usefulness) of microorganisms in our lives.
EASY
Name two industries where the given microorganism (A) is used.
MEDIUM
Due to which of the following organisms, yield of rice has been increased?
MEDIUM
Are all microorganisms harmful? Give reasons to justify your answer.
MEDIUM
Give reasons for the following.
The earth would be one big mound of rubbish if there were no bacteria and fungi. Why?
HARD
Describe how nitrogen gets fixed in nature.
MEDIUM
In what ways are the Rhizobium bacteria useful to plants?
MEDIUM
Which one of the following is not able to fix atmospheric nitrogen?
MEDIUM
With the help of a well-labelled diagram, describe the nitrogen cycle, with special emphasis on nitrogen fixation.
EASY
Where do Rhizobium bacteria live? What is their function?
MEDIUM
How do micro-organisms help in cleaning the environment?
HARD
What is nitrogen fixation? How do leguminous plants help in nitrogen fixation?
MEDIUM
Explain the role played by Rhizobium bacteria in increasing the fertility of the soil.
