English

Science (English Medium) Class 12 - CBSE Important Questions for Biology

Advertisements
[object Object]
[object Object]
Subjects
Popular subjects
Topics
Advertisements
Advertisements
Biology
< prev  441 to 460 of 571  next > 

List the two steps the classical plant breeding involves.

Appears in 1 question paper
Chapter: [8] Strategies for Enhancement in Food Production
Concept: Plant Breeding

Name a genus of fungi that forms a mycorrhizal association with plants.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes as Biocontrol Agents

State the difference in organic farmers approach from that of conventional pest control methods.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes as Biocontrol Agents

"Man can be a primary as well as a secondary consumer." Justify this statement.

Appears in 1 question paper
Chapter: [8] Strategies for Enhancement in Food Production
Concept: Strategies for Enhancement in Food Production (Questions)

Bottled fruit juices are clearer as compared to those made at home. Explain.

 

 
Appears in 1 question paper
Chapter: [8] Strategies for Enhancement in Food Production
Concept: Introduction of Strategies for Enhancement in Food Production

Name the animals in which methanogens occur and the role they play there.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Production of Biogas

Explain the interrelationship between organic farming and biofertilizers, with the help of any three suitable examples.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes as Biofertilizers

Answer the following question.
What are ‘flocs’, formed during secondary treatment of sewage?

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Sewage Treatment

Answer the following question.
Write any two places where methanogens can be found.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Production of Biogas

Answer the following question:
Name the group of bacteria involved in setting milk into curd. Explain the process they carry in doing so. Write another beneficial role of such bacteria.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Household Products

Answer the following question.
What are 'flocs', formed during secondary treatment of sewage?

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Sewage Treatment

Answer the following question.
Write any two places where methanogens can be found.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Production of Biogas

How does the activity of each one of the following help in organic farming?
Mycorrhiza

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes as Biocontrol Agents

How does the activity of each one of the following help in organic farming?
Cyanobacteria

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes as Biofertilizers

Answer the following question.
How did plant breeding techniques help north Indian farmers to develop cane with desired characters?

Appears in 1 question paper
Chapter: [8] Strategies for Enhancement in Food Production
Concept: Plant Breeding

Answer the following question.
Secondary treatment of the sewage is also called Biological treatment. Justify this statement and explain the process.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Sewage Treatment

State the medicinal value and the bioactive molecules produced by Penicillium notatum.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Industrial Products

State the medicinal value and the bioactive molecules produced by Monascus purpureus.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Industrial Products

State the medicinal value and the bioactive molecules produced by Trichoderma polysporum.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Industrial Products

Answer the following question based on Meselson and Stahl's experiment on E. coli :

Write the name of the chemical substance used as the only source of nitrogen in the experiment.

Appears in 1 question paper
Chapter: [8] Microbes in Human Welfare
Concept: Microbes in Industrial Products
< prev  441 to 460 of 571  next > 
Advertisements
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×