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Question (1)

QN002921

Which of the following organisms can be seen only through a microscope?

(A) Earthworm
(B) Sparrow
(C) Microorganism
(D) Frog

Correct Answer: C

Explanation:

Microorganisms are too small to be seen without a microscope.

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Question (2)

QN002922

Microorganisms are commonly called:

(A) decomposers
(B) microbes
(C) fungi
(D) algae

Correct Answer: B

Explanation:

Microorganisms are also called microbes.

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Question (3)

QN002923

Which instrument is mainly used to observe microorganisms?

(A) Telescope
(B) Thermometer
(C) Microscope
(D) Compass

Correct Answer: C

Explanation:

A microscope is used to observe microorganisms.

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Question (4)

QN002924

Antonie van Leeuwenhoek is famous for:

(A) inventing the steam engine
(B) discovering microorganisms using a microscope
(C) discovering gravity
(D) inventing vaccination

Correct Answer: B

Explanation:

He first observed microorganisms using a microscope.

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Question (5)

QN002925

Which of the following is a unicellular microorganism?

(A) Mushroom
(B) Amoeba
(C) Fern
(D) Moss

Correct Answer: B

Explanation:

Amoeba is a unicellular microorganism.

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Question (6)

QN002926

Bread mould belongs to which group of microorganisms?

(A) Bacteria
(B) Protozoa
(C) Fungi
(D) Viruses

Correct Answer: C

Explanation:

Bread mould is a fungus.

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Question (7)

QN002927

Which microorganism is commonly used in curd formation?

(A) Rhizobium
(B) Lactobacillus
(C) Amoeba
(D) Chlorella

Correct Answer: B

Explanation:

Lactobacillus converts milk into curd.

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Question (8)

QN002928

Yeast helps in making bread soft because it produces:

(A) oxygen
(B) nitrogen
(C) carbon dioxide
(D) hydrogen

Correct Answer: C

Explanation:

Carbon dioxide makes the dough rise.

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Question (9)

QN002929

Which microorganism helps in nitrogen fixation in soil?

(A) Yeast
(B) Amoeba
(C) Rhizobium
(D) Mushroom

Correct Answer: C

Explanation:

Rhizobium fixes atmospheric nitrogen.

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Question (10)

QN002930

Which of the following microorganisms is used as a superfood due to its high protein content?

(A) Spirulina
(B) Amoeba
(C) Paramecium
(D) Penicillium

Correct Answer: A

Explanation:

Spirulina is rich in protein.

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Question (1)

Which of the following organisms can be seen only through a microscope?

Explanation:

Link:

Question (2)

Microorganisms are commonly called:

Explanation:

Link:

Question (3)

Which instrument is mainly used to observe microorganisms?

Explanation:

Link:

Question (4)

Antonie van Leeuwenhoek is famous for:

Explanation:

Link:

Question (5)

Which of the following is a unicellular microorganism?

Explanation:

Link:

Question (6)

Bread mould belongs to which group of microorganisms?

Explanation:

Link:

Question (7)

Which microorganism is commonly used in curd formation?

Explanation:

Link:

Question (8)

Yeast helps in making bread soft because it produces:

Explanation:

Link:

Question (9)

Which microorganism helps in nitrogen fixation in soil?

Explanation:

Link:

Question (10)

Which of the following microorganisms is used as a superfood due to its high protein content?

Explanation:

Link:

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