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Name two organisms whose symbiotic association leads to nitrogen fixation in root nodules
|
|
1
|
760
|
September 1, 2016
|
|
Why do farmers prefer biofertilizers to chemical fertilizers these days ? Explain
|
|
1
|
4095
|
September 1, 2016
|
|
Explain the significant role of the genus Nucleopolyhedrovirus in an ecological sensitive area
|
|
0
|
3408
|
September 1, 2016
|
|
Why is Rhizobium categorized as a 'symbiotic bacterium'? How does it act as a biofertiliser?
|
|
0
|
2264
|
September 1, 2016
|
|
Explain the significant role of the genes Nucleopolyhedrovirus in an ecological sensitive area
|
|
0
|
520
|
September 1, 2016
|
|
Name any two free living nitrogen fixing bacteria
|
|
0
|
1242
|
September 1, 2016
|
|
Mention two advantages of adding blue-green algae to paddy fields
|
|
0
|
1765
|
September 1, 2016
|
|
Mention the role of cyanobacteria as a biofertlilizer
|
|
0
|
424
|
September 1, 2016
|
|
Name the types of association that the genus Glomus exhibits with higher plants
|
|
0
|
1139
|
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
|
4777
|
September 1, 2016
|
|
Mention the importance of microbes Streptococcus, Trichoderma and Monascus in medical sciences
|
|
0
|
1882
|
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
|
3776
|
September 1, 2016
|
|
Name the fungus used in organ transplant treatment. Write the product of this organism and explain its specific use
|
|
0
|
4028
|
September 1, 2016
|
|
Mention the product and its use produced by each of the microbes listed below :
|
|
1
|
4312
|
September 1, 2016
|
|
Identify a,b,c,d,e and f in the table given below
|
|
1
|
1910
|
September 1, 2016
|
|
The diagram is that of a typical biogas plant
|
|
1
|
3697
|
September 1, 2016
|
|
Name the genus to which baculo viruses belong. Describe their role in the integrated pest management programmes
|
|
0
|
2447
|
September 1, 2016
|
|
How is activated sludge formed during sewage treatment?
|
|
1
|
3048
|
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
|
397
|
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
|
3062
|
September 1, 2016
|
|
Describe how biogas is generated from activated sludge. List the components of biogas
|
|
0
|
3945
|
September 1, 2016
|
|
Why are the fruit juices bought from market clearer compared with those made at home?
|
|
1
|
5187
|
September 1, 2016
|
|
Identify a,b,c,d,e and f in the table give below
|
|
1
|
1313
|
September 1, 2016
|
|
What are Methanogenes ? Name the animals they are present in and the role they play there
|
|
0
|
440
|
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
|
512
|
September 1, 2016
|
|
How does addition of a small amount of curd to fresh milk help in formation of curd?
|
|
0
|
1577
|
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
|
1757
|
September 1, 2016
|
|
Why are some molecules called bioactive molecules?Give two examples of such molecules
|
|
0
|
3992
|
September 1, 2016
|
|
Name the enzyme produced by Streptococcus bacterium.Explain its importance in medical sciences
|
|
0
|
2693
|
September 1, 2016
|
|
State the use of:
|
|
1
|
1742
|
September 1, 2016
|