MEDIUM
12th CBSE
IMPORTANT
Earn 100

What are biofertilizers? Give two examples.

Important Questions on Microbes in Human Welfare

HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 10 - Microbes in Human Welfare>LONG ANSWER QUESTIONS>Q 1
Why is aerobic degradation more important than anaerobic degradation for the treatment of large volumes of waste waters rich in organic matter? Discuss.
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 10 - Microbes in Human Welfare>LONG ANSWER QUESTIONS>Q 2
Discuss about the major programs that the Ministry of Environment and Forests, Government of India, has initiated for saving major Indian rivers from pollution.
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 10 - Microbes in Human Welfare>LONG ANSWER QUESTIONS>Q 2
Ganga has recently been declared the national river. Discuss the implication with respect to pollution of this river.
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 10 - Microbes in Human Welfare>LONG ANSWER QUESTIONS>Q 3

Draw a diagrammatic sketch of biogas plant and label its various components, given below:

Gas Holder, Sludge Chamber, Digester, Dung+Water chamber

HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 10 - Microbes in Human Welfare>LONG ANSWER QUESTIONS>Q 4
Describe the main ideas behind the biological control of pests and diseases.
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 10 - Microbes in Human Welfare>LONG ANSWER QUESTIONS>Q 5
What would happen if a large volume of untreated sewage is discharged into a river?
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 10 - Microbes in Human Welfare>LONG ANSWER QUESTIONS>Q 5
In what way anaerobic sludge digestion is important in sewage treatments?
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 10 - Microbes in Human Welfare>LONG ANSWER QUESTIONS>Q 6
Which type of food would have lactic acid bacteria? Discuss their useful application.