The microbial biocontrol agent with species-specific narrow spectrum insecticidal application is
Trichoderma
Glomus
Dragonflies
Nucleopolyhedrovirus
A-3 B-1 C-2 D-4
A-3 B-1 C-4 D-2
A-1 B-4 C-2 D-3
A-3 B-4 C-1 D-2
Which of the following is correctly matched for the product produced by them?
Methanobacterium: Lactic acid
Panicillium notatum: Acetic acid
Sacchromyces cerevisiae: Ethanol
Acetobacter aceti: Antibiotics
Which of the following is wrongly matched in the given table?
Match the following list of microbes and their importance
A-4 B-3 C-2 D-1
A-4 B-2 C-1 D-3
Measuring Biochemical Oxygen Demand (BOD) is a method used for
Estimating the amount of organic matter in sewage water
Working out the efficiency of oil driven automobile engines
Measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale
Working out the efficiency of RBCs about their capacity to carry oxygen
A nitrogen-fixing microbe associated with Azolla in rice fields is
Spirulina
Anabaena
Frankia
Tolypothrix
Rhizobium
Nostoc
Mycorrhiza
Agrobacterium
Azospirillum
Azotobacter
The common nitrogen-fixer in paddy fields is
Oscillatoria
The bacteria and mould involved in the work of Alexander Fleming are :-
Staphylococci and Penicillium chrysogenum
Streptococci and Penicillium chrysogenum
Staphylococci and Penicillium notatum
Streptococci and Penicillium notatum
Name the product formed by Trichoderma polysporum and give its use.
Statins which are used as blood cholesterol lowering agent.
Cyclosporin A that is used as immunosuppressive agent.
Statins which are used as clot buster.
Cyclosporin A that is used to inhibit the enzyme responsible for cholesterol synthesis.
Which one of the following pairs is wrongly matched?
Detergents-Lipase
Alcohol-Nitrogenase
Fruit juice-Pectinase
Textile-Amylase
bioremediation of contaminated soils
reclamation of wastelands
gene transfer in higher plants
biological control of soil-borne plant pathogens
Curing of tea leaves is brought by the activity of:
bacteria
mycorrhiza
viruses
fungi
Which of the following can be used as biocontrol agent in the treatment of plant disease?
Lactobacillus
Chlorella
Select the correct group of biocontrol agents
Nostoc, Azospirillium, Nucleopolyhedrovirus
Bacillus thuringiensis. Tobacco mosaic virus, Aphids
Trichoderma, Baculovirus, Bacillus thuringiensis
Oscilatoria, Rhizobium, Trichoderma
Match the following :
(a)
(i)
Cheese
(b)
Saccharomyces cerevisiae
(ii)
Curd
(c)
Aspergillus niger
(iii)
Citric Acid
(d)
Acetobacter aceti
(iv)
Bread
(v)
Acetic acid
Select the correct option
(a) (b) (c) (d)
(ii) (i) (iii) (v)
(ii) (iv) (v) (iii)
(ii) (iv) (iii) (v)
(iii) (iv) (v) (i)
During sewage treatment, biogases are produced which include :
Methane,oxygen, hydrogen sulphide
Hydrogen sulphide, methane, sulphur dioxide
Methane, hydrogen sulphide, carbon dioxide
Hydrogen sulphide, nitrogen, methane
All are correct w.r.t BOD (Biochemical oxygen Demand), except
It refers to the amount of oxygen that would be consumed if all the organic matter in one liter of water were oxidized by bacteria
The BOD test is a measure of the organic matter present in the water
The greater the BOD of waste water, less is its polluting potential
Waste water is treated till BOD is reduced significantly
What are flocs?
Masses of anaerobic bacteria
Masses of aerobic fungi only
Masses of anaerobic bacteria and fungi
Masses of aerobic bacteria associated with fungal filaments
One of the major difficulties in the biological control of insect/pest is that
The method is less effective as compared with the use of insecticides
The practical difficulty of introducing the predator to specific areas
The predator develops a preference to other deits and may itself become a pest
The predator does not always survive when transferred to a new environment
A biocontrol agent to be a part of an integrated pest management should be
species-specific and symbiotic
free living and broad spectrum
narrow spectrum and symbiotic
species-specific and inactive on non-target organisms
Which of the following statements about methanogens is not correct?
They can be used to produce biogas,
They are found in the rumen of cattle and their excreta.
They grow aerobically and breakdown cellulose-rich food.
They produce methane gas.
Among the following pairs of microbes, which pair has both the microbes that can be used as biofertilizers ?
Aspergillus and Rhizopus
Rhizobium and Rhizopus
Cyanobacteria and Rhizobium
Aspergillus and Cyanobacteria
Match the following microorganism with product
Which of the following is put into Anaerobic sludge digester for further sewage treatment?
Floating debris
Effluents of primary treatmet
Activated sludge
Primary sludge
For the commercial and industrial production of Citric Acid, which of the following microbes is used?
Lactobacillus sp
Clostridium bretylium
Match the following columns and select the correct option:-
Column - I
Column -II
a)
Biocontrol agents of several plant pathogens
b)
Bacillus thuringiensis
Get rid of mosquitoes
c)
Narrow spectrum insecticidal applications
d)
Baculoviruses
Biocontrol agents of lepidopteran plant pests
Absorb phosphorus from soil
(a)-(iii), (b)-(v), (c)-(iv), (d)-(i)
(a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
(a)-(ii), (b)-(iii), (c)-(iv), (d)-(v)
(a)-(ii), (b)-(iv), (c)-(v), (d)-(iii)
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