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Name two organisms whose symbiotic association leads to nitrogen fixation in root nodules
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1
|
754
|
September 1, 2016
|
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Why do farmers prefer biofertilizers to chemical fertilizers these days ? Explain
|
|
1
|
4092
|
September 1, 2016
|
|
Explain the significant role of the genus Nucleopolyhedrovirus in an ecological sensitive area
|
|
0
|
3404
|
September 1, 2016
|
|
Why is Rhizobium categorized as a 'symbiotic bacterium'? How does it act as a biofertiliser?
|
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0
|
2253
|
September 1, 2016
|
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Explain the significant role of the genes Nucleopolyhedrovirus in an ecological sensitive area
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0
|
513
|
September 1, 2016
|
|
Name any two free living nitrogen fixing bacteria
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0
|
1232
|
September 1, 2016
|
|
Mention two advantages of adding blue-green algae to paddy fields
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0
|
1758
|
September 1, 2016
|
|
Mention the role of cyanobacteria as a biofertlilizer
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|
0
|
422
|
September 1, 2016
|
|
Name the types of association that the genus Glomus exhibits with higher plants
|
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0
|
1136
|
September 1, 2016
|
|
Explain the process of sewage water treatment before it can be discharge into natural water bodies. Why is this treatment essential?
|
|
0
|
4767
|
September 1, 2016
|
|
Mention the importance of microbes Streptococcus, Trichoderma and Monascus in medical sciences
|
|
0
|
1877
|
September 1, 2016
|
|
Microbes play a dual role when used for sewage treatment as they not only help to retrieve usable water but also generate fuel. Write how this happens?
|
|
0
|
3769
|
September 1, 2016
|
|
Name the fungus used in organ transplant treatment. Write the product of this organism and explain its specific use
|
|
0
|
4022
|
September 1, 2016
|
|
Mention the product and its use produced by each of the microbes listed below :
|
|
1
|
4307
|
September 1, 2016
|
|
Identify a,b,c,d,e and f in the table given below
|
|
1
|
1902
|
September 1, 2016
|
|
The diagram is that of a typical biogas plant
|
|
1
|
3684
|
September 1, 2016
|
|
Name the genus to which baculo viruses belong. Describe their role in the integrated pest management programmes
|
|
0
|
2442
|
September 1, 2016
|
|
How is activated sludge formed during sewage treatment?
|
|
1
|
3039
|
September 1, 2016
|
|
Name two different categories of microbes naturally occuring in sewage water.Explain their role in cleaning sewage water into usable water
|
|
0
|
395
|
September 1, 2016
|
|
Name the pest that destroys the cotton balls.Explain the role of Bacillus thuringiensis in protecting the cotton crop against the pest to increase the yield
|
|
0
|
3056
|
September 1, 2016
|
|
Describe how biogas is generated from activated sludge. List the components of biogas
|
|
0
|
3940
|
September 1, 2016
|
|
Why are the fruit juices bought from market clearer compared with those made at home?
|
|
1
|
5182
|
September 1, 2016
|
|
Identify a,b,c,d,e and f in the table give below
|
|
1
|
1309
|
September 1, 2016
|
|
What are Methanogenes ? Name the animals they are present in and the role they play there
|
|
0
|
434
|
September 1, 2016
|
|
Name the two different categories of microbes naturally occuring in sewage water.Explain their role in cleaning sewage water into usable water
|
|
0
|
509
|
September 1, 2016
|
|
How does addition of a small amount of curd to fresh milk help in formation of curd?
|
|
0
|
1569
|
September 1, 2016
|
|
During the production of curd, a small amount of curd is added as a starter to the fresh milk at a suitable temperature.Explain the changes the milk undergoes when it sets into curd
|
|
0
|
1755
|
September 1, 2016
|
|
Why are some molecules called bioactive molecules?Give two examples of such molecules
|
|
0
|
3981
|
September 1, 2016
|
|
Name the enzyme produced by Streptococcus bacterium.Explain its importance in medical sciences
|
|
0
|
2686
|
September 1, 2016
|
|
State the use of:
|
|
1
|
1738
|
September 1, 2016
|