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Chapter 9: Microbes in Human Welfare
- Online Test
Chapter 9: Microbes in Human Welfare
TEST : 1
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q1.
Which of the following microorganism is used for production of citric acid in industries?
A.
Lactobacillus bulgaris
B.
Penicillium citrinum
C.
Aspergillus niger
D.
Rhizopus nigricans
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q2.
Which of the following pair is correctly matched for the product produced by them?
A.
Acetobacter aceti - Antibiotics
B.
Methanobacterium - Lactic acid
C.
Penicilium notatum - Acetic acid
D.
Saccharomyces cerevisiae - Ethanol
View Solution
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Answer :
Option D
Explaination / Solution:
No Explaination.
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q3.
The most common substrate used in distilleries for the production of ethanol is_________
A.
Soyameal
B.
Groundgram
C.
Molasses
D.
Corn meal
View Solution
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Answer :
Option C
Explaination / Solution:
No Explaination.
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q4.
Cry toxins obtained from Bacillus thuringiensis are effective against for______
A.
Mosquitoes
B.
Flies
C.
Nematodes
D.
Bollworms
View Solution
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Answer :
Option D
Explaination / Solution:
No Explaination.
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q5.
Cyclosporin – A is an immunosuppressive drug produced from _______
A.
Aspergillus niger
B.
Manascus purpureus
C.
Penicillium notatum
D.
Trichoderma polysporum
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q6.
Which of the following bacteria is used extensively as a bio-pesticide?
A.
Bacillus thurigiensis
B.
Bacillus subtilis
C.
Lactobacillus acidophilus
D.
Streptococcus lactis
View Solution
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Answer :
Option A
Explaination / Solution:
No Explaination.
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q7.
Which of the following is not involved in nitrogen fixation?
A.
Pseudomonas
B.
Azotobacter
C.
Anabaena
D.
Nostac
View Solution
Add Work Space
Answer :
Option A
Explaination / Solution:
No Explaination.
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q8.
CO
2
is not released during
A.
Alcoholic fermentation
B.
Lactate fermentation
C.
Aerobic respiration in animals
D.
Aerobic respiration in plants
View Solution
Add Work Space
Answer :
Option B
Explaination / Solution:
No Explaination.
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q9.
The purpose of biological treatment of waste water is to _______
A.
Reduce BOD
B.
Increase BOD
C.
Reduce sedimentation
D.
Increase sedimentation
View Solution
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Answer :
Option A
Explaination / Solution:
No Explaination.
# Chapter 9: Microbes in Human Welfare
# TN 12th Zoology
Prepare / Learn
Q10.
The gases produced in anaerobic sludge digesters are
A.
Methane, oxygen and hydrogen sulphide.
B.
Hydrogen sulphide, methane and sulphur dioxide.
C.
Hydrogen sulphide, nitrogen and methane.
D.
Methane, hydrogen sulphide and CO
2
View Solution
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Answer :
Option D
Explaination / Solution:
No Explaination.
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