Write a flow chart showing sewage treatment.

Important Questions on Microbes in Human Welfare

HARD

12th West Bengal Board

IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 11 - Microbes in Human Welfare>EXERCISE>Q 10

Write about the role of microbes in biogas production.

HARD

12th West Bengal Board

IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 11 - Microbes in Human Welfare>EXERCISE>Q 11

Write about the role of microbes in biocontrol agents.

HARD

12th West Bengal Board

IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 11 - Microbes in Human Welfare>EXERCISE>Q 12

What is biogas? Mention the advantages of biogas.

HARD

12th West Bengal Board

IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 11 - Microbes in Human Welfare>EXERCISE>Q 13

Define bio-fertilizers? What is microphos? What is azotobactrin?

HARD

12th West Bengal Board

IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 11 - Microbes in Human Welfare>EXERCISE>Q 14

What are flocs? Write in brief about the secondary treatment of the sewages.