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Biodiversity and Classification of Microorganisms
Biology
This content outlines the biodiversity and classification of microorganisms, including viruses, bacteria, protista, and fungi. It covers their basic structures, characteristics, reproduction, and roles in the environment. The material also details their effects on health, disease management, and the concept of immunity in plants.
Microbiology
Classification
Ecology
30 Questions
Medium
Ages 12+
Feb 19, 2026
About this Study Set
This study set covers Biology through
30 practice questions.
This content outlines the biodiversity and classification of microorganisms, including viruses, bacteria, protista, and fungi. It covers their basic structures, characteristics, reproduction, and roles in the environment. The material also details their effects on health, disease management, and the concept of immunity in plants. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 30 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
Which of the following is a characteristic of viruses?
-
A
Acellular
-
B
Unicellular
-
C
Prokaryotic
-
D
Living
2
Bacteria are described as which type of cell?
-
A
Eukaryotic
-
B
Multicellular
-
C
Prokaryotic
-
D
Parasitic
3
Protista can be unicellular or multicellular and are classified as:
-
A
Prokaryotes
-
B
Acellular
-
C
Eukaryotes
-
D
Non-living
4
Fungi are eukaryotic organisms. Which statement about their structure is NOT always true?
-
A
Unicellular
-
B
Multicellular
-
C
Eukaryotic
-
D
Reproduce
5
What is a symbiotic relationship?
-
A
One organism living alone
-
B
Two organisms living together
-
C
An organism causing disease
-
D
A non-living interaction
6
Which bacteria are known for fixing nitrogen in plants?
-
A
E. coli
-
B
Rabies virus
-
C
Nitrogen-fixing bacteria
-
D
Cholera bacteria
7
HIV/AIDS is a disease caused by which type of microorganism?
-
A
Bacteria
-
B
Fungi
-
C
Protista
-
D
Virus
8
Cholera is a disease caused by:
-
A
Viruses
-
B
Fungi
-
C
Bacteria
-
D
Protista
9
Malaria is a disease caused by:
-
A
Bacteria
-
B
Fungi
-
C
Protista
-
D
Viruses
10
Ringworm is a disease caused by:
-
A
Bacteria
-
B
Fungi
-
C
Protista
-
D
Viruses
11
What is immunity?
-
A
A type of disease
-
B
The body's defense system
-
C
A method of reproduction
-
D
A classification of cells
12
Which of the following is a type of immunity?
-
A
Waxy cuticle
-
B
Sticky secretions
-
C
Acquired immunity
-
D
Binary fission
13
What is the function of the waxy cuticle in plants' immune response?
-
A
To absorb nutrients
-
B
To prevent water loss
-
C
To provide structural support
-
D
To act as a barrier against pathogens
14
The thick bark of woody plants serves as a defense mechanism against:
-
A
Drought
-
B
Herbivores
-
C
Infecting microorganisms
-
D
Cold weather
15
Which process is characteristic of bacterial reproduction?
-
A
Meiosis
-
B
Binary fission
-
C
Mitosis
-
D
Budding
16
What does 'acellular' mean in the context of viruses?
-
A
Composed of many cells
-
B
Lacking a cellular structure
-
C
Having a nucleus
-
D
Being prokaryotic
17
E. coli is an example of a microorganism involved in which type of relationship?
-
A
Parasitic
-
B
Symbiotic
-
C
Pathogenic
-
D
Autotrophic
18
Which of the following is NOT a disease caused by bacteria listed in the text?
-
A
Blight
-
B
Cholera
-
C
Tuberculosis
-
D
Malaria
19
Which group of microorganisms includes organisms like yeast and mold?
-
A
Viruses
-
B
Bacteria
-
C
Protista
-
D
Fungi
20
Which term describes organisms that can only survive by living in or on another organism?
-
A
Autotrophic
-
B
Prokaryotic
-
C
Parasitic
-
D
Eukaryotic
21
The ability of a plant to resist infection by a microorganism is known as:
-
A
Nutrition
-
B
Reproduction
-
C
Immunity
-
D
Classification
22
Which of the following is a disease caused by a virus?
-
A
Anthrax
-
B
Thrush
-
C
Influenza
-
D
Rusts
23
What is the primary characteristic that distinguishes prokaryotes from eukaryotes?
-
A
Presence of a nucleus
-
B
Mode of nutrition
-
C
Type of reproduction
-
D
Cellular structure
24
Which microorganism group is described as either unicellular or multicellular and eukaryotic?
-
A
Viruses
-
B
Bacteria
-
C
Protista and Fungi
-
D
All of the above
25
'Non-living' is a description applied to which group of microorganisms?
-
A
Bacteria
-
B
Protista
-
C
Fungi
-
D
Viruses
26
What is the mode of nutrition for most bacteria?
-
A
Photosynthesis
-
B
Chemosynthesis
-
C
Heterotrophic
-
D
Autotrophic
27
Which of the following is a disease caused by a protist?
-
A
Rabies
-
B
Bligh
-
C
Malaria
-
D
Ringworm
28
Which term describes microorganisms that obtain nutrients from dead organic matter?
-
A
Parasitic
-
B
Symbiotic
-
C
Saprophytic
-
D
Autotrophic
29
What is the role of microorganisms in maintaining balance in the environment?
-
A
Causing pollution
-
B
Destroying habitats
-
C
Contributing to nutrient cycles
-
D
Increasing disease spread
30
Which of the following is a type of acquired immunity?
-
A
The waxy cuticle
-
B
Sticky secretions
-
C
Vaccination
-
D
Thick bark
