M.C.Q (1 Marks)

MCQ 11 Mark

Citric acid is produced by which of the following micro$-$organisms

A
Acetobacter aceti
B
Clostridium butylicum
C
Lactobacillus species
✓
Aspergillus niger

Answer

Correct option: D.

Aspergillus niger

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MCQ 21 Mark

Microbe, which is used as bio$-$fertilizer, is:

A
Trichoderma
B
Penicillium notatum
✓
Cyanobacteria
D
Lactobacillus

Answer

Correct option: C.

Cyanobacteria

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MCQ 31 Mark

From which microbe was the first recombinant $\text{DNA}$ produced by using a plasmid?

A
$E.$ coli
B
Agrobacterium tumefaciens
✓
Salmonella Typhimuriam
D
Thermus aquaticus

Answer

Correct option: C.

Salmonella Typhimuriam

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MCQ 41 Mark

During anaerobic digestion of organic waste as happens in making biogas, which of the following fractions doesn't decomposed?

A
Lipid
✓
Lignin
C
Hemicellulose
D
Cellulose

Answer

Correct option: B.

Lignin

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MCQ 51 Mark

Which of the following pairs is not matched correctly?

✓
Citrrhotia $\rightarrow$ Drug addiction
B
Spirulina $\rightarrow$ Single cell protein
C
Rhizobium $\rightarrow$ Bio$-$fertilizer
D
Streptomyces $\rightarrow$ Antibiotic

Answer

Correct option: A.

Citrrhotia $\rightarrow$ Drug addiction

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MCQ 61 Mark

Which of the following pairs belongs to biofertilizers?

✓
Azolla and $\text{BGA}$
B
Nostoc and Legame
C
Rhizobium and Grass
D
Salmonella and $E.$ coli

Answer

Correct option: A.

Azolla and $\text{BGA}$

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MCQ 71 Mark

Which of the following is an example of biological control of pests/diseases using microbes?

✓
Trichoderma is responsible for certain plant pathogens.
B
Presence of Nucleopolyhedrovirus against rot in brassica.
C
Making of Bt cotton to increase the yield of cotton.
D
Presence of lady bird, beetle against pests in

mustard.

Answer

Correct option: A.

Trichoderma is responsible for certain plant pathogens.

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MCQ 81 Mark

What is usually given immediately when a patient of myocardial infarction is brought to the hospital?

A
Penicillin
B
Steptokinase
C
Cyclosporine
✓
Statins

Answer

Correct option: D.

Statins

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MCQ 91 Mark

Which is the most commonly used substrate in distilleries for the production of ethanol?

A
Corn flour
B
Soyabean flour
C
Gram flour
✓
Molasses

Answer

Correct option: D.

Molasses

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MCQ 101 Mark

In 'fed batch' fermentation method, the process of continuously adding sugar is done for which of one of the followings?

A
In preparing methane
✓
In obtaining antibiotics
C
In purification of enzymes
D
In sewage decomposition

Answer

Correct option: B.

In obtaining antibiotics

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MCQ 111 Mark

What is mainly formed by the action of anaerobic bacteria on sewage?

A
Laughing gas
✓
Propane
C
Mustard gas
D
Mars gas

Answer

Correct option: B.

Propane

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MCQ 121 Mark

What is secondary sewage treatment mainly?

A
Physical Process
B
Mechanical Process
C
Chemical Process
✓
Biological Process

Answer

Correct option: D.

Biological Process

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MCQ 131 Mark

Mycorrhiza is responsible for the nutrition of which element?

A
Potassium
B
Copper
C
Zinc
✓
Phosphorus

Answer

Correct option: D.

Phosphorus

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MCQ 141 Mark

Antibiotics play an important role in the prevention of which infectious diseases?

A
Diptheria
B
Whooping cough
C
Leprosy
✓
All of these

Answer

Correct option: D.

All of these

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MCQ 151 Mark

To grow microbes on a commercial scale, a large vessel is required, which is known as:

✓
Fermenter
B
Thermenter
C
Ermenter
D
Peermenter

Answer

Correct option: A.

Fermenter

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MCQ 161 Mark

Which of the following plans was launched so that the main rivers of the country can be prevent from pollution?

A
Yamuna Action Plan
B
Ganga Action Plan
C
Sambhar Lake Action Plan
✓
(a) and (b) both

Answer

Correct option: D.

(a) and (b) both

(D)(a) and (b) both

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MCQ 171 Mark

Which of the following bacteria is helpful in the production of acetic acid?

✓
Lactobacillus
B
Clostridium
C
Acitobactor acetae
D
Penicillium notatum

Answer

Correct option: A.

Lactobacillus

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MCQ 181 Mark

The discoverer of penicillin is:

A
Alexander Hook
✓
Alexander Fleming
C
Alexander Brown
D
Alexander Schwann

Answer

Correct option: B.

Alexander Fleming

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MCQ 191 Mark

Which of the following is prepared by distillation of fermented juice?

✓
Rum
B
Beer
C
Wine
D
All of these

Answer

Correct option: A.

Rum

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MCQ 201 Mark

Which of the following is produced without distillation?

✓
Wine
B
Whistkey
C
Brandi
D
Rum

Answer

Correct option: A.

Wine

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MCQ 211 Mark

Which pesticide is lipophilic?

✓
Organochlorine
B
Organophosphate
C
Triazine
D
Pyrethoid

Answer

Correct option: A.

Organochlorine

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MCQ 221 Mark

Toddy is prepared by fermenting the secretion obtained from which part of the palm tree?

A
Root
B
Leaf
✓
Stem
D
Flower

Answer

Correct option: C.

Stem

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MCQ 231 Mark

Which of the following is beneficial in getting rid of aphids and mosquitos?

✓
Dragonfly and Ladybird
B
Baculoviruses
C
Bacillus thuringiensis
D
Trichoderma

Answer

Correct option: A.

Dragonfly and Ladybird

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MCQ 241 Mark

Based on nutrition cyanobacteria are:

A
Parasite
B
Host
✓
Autotrophic
D
Saprophytes

Answer

Correct option: C.

Autotrophic

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MCQ 251 Mark

Which of the following is used as 'clot breaker'?

✓
Streptokinase
B
Lipase
C
Amylase
D
Proteases

Answer

Correct option: A.

Streptokinase

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MCQ 261 Mark

The rate of uptake of O, by microbes in a sample of water is measured by:

A
C.O.D. Test
B
H.O.D. Test
C
S.O.D. Test
✓
B.O.D. Test

Answer

Correct option: D.

B.O.D. Test

(D)B.O.D. Test

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MCQ 271 Mark

Which of the following is used in the control of butterfly caterpillars?

✓
Bacillus thuringiensis
B
Trichoderma
C
Bambulovirus
D
Methano bacteria

Answer

Correct option: A.

Bacillus thuringiensis

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MCQ 281 Mark

The symbiotic relationship between fungi and plants is called:

✓
Mycorrhiza
B
Lichen
C
Symbiosis
D
All of these

Answer

Correct option: A.

Mycorrhiza

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MCQ 291 Mark

Against the life is related to:

✓
Antibiotics
B
Bacteria
C
Fungi
D
Algae

Answer

Correct option: A.

Antibiotics

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MCQ 301 Mark

Which one of the following pairs is wrongly matched?

✓
Coliform$-$Vinegar
B
Methanogens$-$Gobar gas
C
Yeast Ethanol
D
Streptomycetes$-$Antibiotic

Answer

Correct option: A.

Coliform$-$Vinegar

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MCQ 311 Mark

Which of the following pair is bio$-$fertilizers?

✓
Azolla and $\text{BGA}$
B
Nostoc and Legume
C
Rhizobium habitat
D
Salmonella and $E.$ coli

Answer

Correct option: A.

Azolla and $\text{BGA}$

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MCQ 321 Mark

While making bread, due to whose action $CO _2$ is released which causes it to become porous?

✓
Yeast
B
Bacteria
C
Virus
D
Protozoans

Answer

Correct option: A.

Yeast

(A)Yeast

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MCQ 331 Mark

The bacteria used in 'gobar gas' plant is:

✓
Methanogen bacteria
B
Nitrifying bacteria
C
Amino acid bacteria
D
Denitrifying bacteria

Answer

Correct option: A.

Methanogen bacteria

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Biology M.C.Q (1 Marks)

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