Which of the following is not cynobacteria?

(1) Anabaena

(2) Nostoc

(3) Oscillatoria

(4) Glomus

Subtopic:  Microbes as Biofertilizer |
 93%
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Which of the following adds organic matter to the soil and increase the fertility of the soil?

(1) Cyanobacteria

(2) Bacteria

(3) Yeast

(4) Glomus

Subtopic:  Microbes as Biofertilizer |
 71%
From NCERT
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Biochemical oxygen demand is

(1) Directly proportional to Biodegradable organic matter

(2) Inversely proportional to Biodegradable organic matter

(3) Depends on direction of flow

(4) Directly proportional to dissolved oxygen

Subtopic:  Microbes in Sewage Treatment |
 84%
From NCERT
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Higher the biodegradable organic matter in sewage

(1) Higher the dissolved oxygen

(2) Higher the BOD

(3) Lower the number of Bacteria

(4) All of these

Subtopic:  Microbes in Sewage Treatment |
 83%
From NCERT
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Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I                                                       Column II
I. Roots of leguminous plants                          1. Frankia
II. Azolla                                                       2. Mycorrhiza
III. Glomus                                                    3. Anabaena
IV. Alnus                                                        4. Rhizobium
Codes:
I II III IV
A. 1 2 3 4
B. 2 1 4 3
C. 2 1 3 4
D. 4 3 2 1

Subtopic:  Microbes as Biofertilizer |
 79%
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Match each item in Column I with one item in Column II and choose your answer from the codes given below:
Column I                                      Column II
I. Aspergillus niger                       1. Clot buster
II. Streptococcus                          2. Citric acid
III. Trichoderma                           3. Cyclosporin A
IV. Monascuspurpureus                 4. Statins
Codes:
I II III IV
A. 1 2 3 4
B. 2 1 4 3
C. 2 1 3 4
D. 1 2 4 3

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 86%
From NCERT
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Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I                                 Column II
(GM microbe)                           (Application)
I. Rhizobium meliloti                 1. Prevention of frost damage
II. Pseudomonas                       2. Nitrogen fixation in fluorescence cereals
III. Pseudomonas putida            3. Scavenging of oil spills
IV. Trichoderma                         4. Biocontrol of fungal diseases
Codes:
      I   II   III   IV
A.   1   2    3     4
B.   2   1   4      3
C.   2   1   3      4
D.   1   2   4      3

Subtopic:  Microbes in Biocontrol Agent |
 64%
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In the given diagram, the gas X can be:
  

1. Hydrogen sulfide 2. Carbon monoxide
3. Ammonia 4. Oxygen
Subtopic:  Microbes in Production of Biogas |
 82%
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The virus shown here is a causative agent of:

1. Intestinal infections
2. Respiratory infections
3. CNS infections
4. Genito-urinary infections
Subtopic:  Industrial Products, Beverages & Antibiotics |
 89%
From NCERT
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Nitrogen fixation is carried out by:

1.  bacteria 2.  fungi
3.  protists 4.  algae

Subtopic:  Microbes as Biofertilizer |
 82%
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