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Biodiversity and Classification of Microorganisms
Biology
This study material covers the fundamental concepts of biodiversity and the classification of microorganisms, including their basic structures, general characteristics, roles in the environment, symbiotic relationships, and the basics of immunity.
Microbiology
Biodiversity
Classification
24 Questions
Medium
Ages 14+
Mar 17, 2026
About this Study Set
This study set covers Biology through
24 practice questions.
This study material covers the fundamental concepts of biodiversity and the classification of microorganisms, including their basic structures, general characteristics, roles in the environment, symbiotic relationships, and the basics of immunity. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 24 questions from the
Biodiversity and Classification of Microorganisms study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is a primary concept related to the variety of life on Earth, including microorganisms?
-
A
Nucleus structure
-
B
Biodiversity
-
C
Symbiotic relationships
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D
Immunity
2
Which term describes organisms that can only be seen with a microscope?
-
A
Macroscopic organisms
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B
Microorganisms
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C
Eukaryotes
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D
Prokaryotes
3
What are the two main categories of cells based on their internal structure?
-
A
Virus and Bacteria
-
B
Protista and Fungi
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C
Prokaryote and Eukaryote
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D
Natural and Acquired
4
Which of the following is NOT a group of microorganisms with basic structures and general characteristics discussed?
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A
Virus
-
B
Protista
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C
Mammals
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D
Fungi
5
What is a key role of microorganisms in the environment?
-
A
Causing diseases
-
B
Maintaining balance
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C
Destroying ecosystems
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D
Increasing pollution
6
What type of symbiotic relationship involves bacteria that convert atmospheric nitrogen into a usable form for plants?
-
A
Parasitism
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B
Commensalism
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C
Nitrogen fixing bacteria
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D
Mutualism
7
E. coli is an example of a microorganism often discussed in the context of symbiotic relationships and its effects.
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A
True
-
B
False
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C
Partially true
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D
Cannot be determined
8
What is the body's defense system against pathogens called?
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A
Classification
-
B
Biodiversity
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C
Immunity
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D
Nucleus structure
9
Which type of immunity is present from birth?
-
A
Acquired immunity
-
B
Artificial immunity
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C
Natural immunity
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D
Passive immunity
10
Immunity developed after exposure to a pathogen or through vaccination is known as:
-
A
Natural immunity
-
B
Innate immunity
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C
Acquired immunity
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D
Herd immunity
11
What is a characteristic of prokaryotic cells?
-
A
Presence of a nucleus
-
B
Membrane-bound organelles
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C
Lack of a nucleus
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D
Complex structure
12
Eukaryotic cells are generally characterized by:
-
A
Simplicity
-
B
Absence of organelles
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C
Presence of a nucleus
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D
Lack of DNA
13
Viruses are considered microorganisms, but they differ from bacteria in that they:
-
A
Are always beneficial
-
B
Can reproduce independently
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C
Require a host cell to replicate
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D
Are always multicellular
14
Bacteria are single-celled organisms that:
-
A
Are always pathogenic
-
B
Lack a cell wall
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C
Can be autotrophic or heterotrophic
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D
Are only found in extreme environments
15
Protista is a diverse kingdom that includes:
-
A
Only multicellular organisms
-
B
Only plant-like organisms
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C
Unicellular or simple multicellular eukaryotes
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D
Only bacteria
16
Fungi are characterized by their ability to:
-
A
Perform photosynthesis
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B
Absorb nutrients from their environment
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C
Produce their own food internally
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D
Move actively using flagella
17
What is a potential effect of microorganisms on human health, requiring management?
-
A
Nitrogen fixation
-
B
Disease
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C
Decomposition
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D
Nutrient cycling
18
The study material mentions revising the structure of which cellular component?
-
A
Cell wall
-
B
Ribosome
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C
Nucleus
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D
Mitochondria
19
Which of the following is an example of a symbiotic relationship where one organism benefits and the other is harmed?
-
A
Nitrogen fixation
-
B
E. coli in the human gut
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C
Parasitism
-
D
Decomposition
20
Plants exhibit their own defense mechanisms against pathogens, known as:
-
A
Antibiotic resistance
-
B
Immune response
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C
Symbiosis
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D
Biodiversity
21
Microorganisms play a crucial role in decomposition, breaking down dead organic matter.
-
A
True
-
B
False
-
C
Sometimes
-
D
Only in aquatic environments
22
A relationship where both organisms benefit from the interaction is called:
-
A
Parasitism
-
B
Commensalism
-
C
Mutualism
-
D
Predation
23
Which group of microorganisms is known for its chitinous cell walls?
-
A
Bacteria
-
B
Viruses
-
C
Protista
-
D
Fungi
24
The study of the variety of life forms, including microorganisms, is termed:
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A
Microbiology
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B
Ecology
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C
Biodiversity
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D
Genetics
