Microorganisms Friend And Foe Test

Result

Microorganisms Friend And Foe Test - 8

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Weekly Quiz Competition

Question 1
1 / -0

Danish was suffering from disease that is caused by Virus. Which one the below given diseases he is not suffering from ?

A
Dysentery

B
Hepatitis B

C
Measles

D
Chicken pox

Solution

Dysentery is caused by protozoans and not virus, the rest all are caused by virus.
Question 2
1 / -0

Which of the following are preservatives used in jams and squashes?

A
Sodium benzoate

B
sodium metabisulphite

C
Sugar

D
All of the above

Solution

Sodium benzoate and sodium metabisulphite are common preservatives. These are also used in the jams and squashes to check their spoilage. Jams, jellies and squashes are preserved by sugar.
Question 3
1 / -0

Which of the following statements is/are true?

A
The atmospheric nitrogen cannot be taken directly by plants and animals.

B
Our atmosphere has 78% nitrogen gas.

C
Blue green algae present in the air fix nitrogen from the atmosphere and convert into compounds of nitrogen.

D
After nitrogen fixation, Nitrogen is used for the synthesis of plant proteins and other compounds.

Solution

Certain bacteria and blue green algae present in the soil fix nitrogen from the atmosphere and convert into compounds of nitrogen.
Question 4
1 / -0

The following options are inventor with corresponding inventions, which of the following are incorrect?

A
Edward Jenner - the vaccine for smallpox.

B
Alexander Fleming – penicillin

C
Louis Pasteur – fertilization

D
none of the above

Solution

Louis Pasteur discovered fermentation in 1857.
Question 5
1 / -0

Which of the following activities is of friendly microorganisms?

A
preparation of curd, breads, cakes, medicines, etc.

B
Decomposition of inorganic wastes

C
Both A and B

D
None of the above

Solution

Microorganisms which help us in different ways are called friendly microorganisms. For example: in preparation of curd, bread, cakes, medicines, etc. They are also used to increase soil fertility. They are also helpful in decomposing organic wastes (like vegetable peels, animal remains, feces, etc.) decomposition.
Question 6
1 / -0

Which of the following should be avoided to be safe from communicable diseases?

A
Use mosquito net and repellents.

B
use handkerchief on the nose and mouth while sneezing.

C
consume uncovered item of food.

D
Do not let water collect anywhere, in coolers, tyres, flower pot etc

Solution

Avoid consuming uncovered items of food to be safe from communicable diseases.
Question 7
1 / -0

Which of the following microorganisms do not reproduce outside the cells?

A
Bacterium

B
Fungi

C
Protozoa

D
Virus

Solution

Microorganisms are classified into four major groups. These groups are bacteria, fungi, protozoa and some algae. Viruses are also microscopic. They, however, reproduce only inside the cells of the host organism, which may be a bacterium, plant or animal.
Question 8
1 / -0

Which of the following is the use of microorganism?

A
Antibiotics

B
Fermentation

C
Nitrogen fixation

D
All of the above

Solution

The process of conversion of sugar into alcohol by yeast is known as fermentation. These days a number of antibiotics are being produced from bacteria and fungi. In agriculture they are used to increase soil fertility by fixing nitrogen.
Question 9
1 / -0

Microorganisms in the soil convert atmospheric nitrogen into ammonium compounds, thereby enabling the survival of;

A
Plants and animals

B
Bacteria and fungi

C
Both A and B

D
None of the above

Solution

Microorganisms in the soil convert atmospheric nitrogen into ammonium compounds, thereby enabling the survival of plants and animals.

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Re-Attempt Weekly Quiz Competition

Microorganisms Friend And Foe Test - 8

Result

Microorganisms Friend And Foe Test - 8

Score

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Rank

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SHARING IS CARING

Question 1

Dysentery

Hepatitis B

Measles

Chicken pox

Solution

Question 2

Sodium benzoate

sodium metabisulphite

Sugar

All of the above

Solution

Question 3

The atmospheric nitrogen cannot be taken directly by plants and animals.

Our atmosphere has 78% nitrogen gas.

Blue green algae present in the air fix nitrogen from the atmosphere and convert into compounds of nitrogen.

After nitrogen fixation, Nitrogen is used for the synthesis of plant proteins and other compounds.

Solution

Question 4

Edward Jenner - the vaccine for smallpox.

Alexander Fleming – penicillin

Louis Pasteur – fertilization

none of the above

Solution

Question 5

preparation of curd, breads, cakes, medicines, etc.

Decomposition of inorganic wastes

Both A and B

None of the above

Solution

Question 6

Use mosquito net and repellents.

use handkerchief on the nose and mouth while sneezing.

consume uncovered item of food.

Do not let water collect anywhere, in coolers, tyres, flower pot etc

Solution

Question 7

Bacterium

Fungi

Protozoa

Virus

Solution

Question 8

Antibiotics

Fermentation

Nitrogen fixation

All of the above

Solution

Question 9

Plants and animals

Bacteria and fungi

Both A and B

None of the above

Solution

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