Biology - Biological Classification - MCQs
Understand the system of classifying organisms, including taxonomy and the three domains of life.
What is the role of fungi in an ecosystem?
A. Primary producers
B. Decomposers
C. Consumers
D. Pollinators
Answer: Decomposers
Which of the following is a major characteristic of the kingdom Animalia?
A. Autotrophic
B. Multicellular and heterotrophic
C. Cell walls made of cellulose
D. Unicellular
Answer: Multicellular and heterotrophic
What is the taxonomic rank above ‘Genus’?
A. Species
B. Class
C. Family
D. Order
Answer: Family
Which of the following kingdoms contains organisms that reproduce primarily by spores?
A. Animalia
B. Fungi
C. Plantae
D. Monera
Answer: Fungi
Which of the following is a defining characteristic of the kingdom Protista?
A. Multicellular and autotrophic
B. Prokaryotic
C. Unicellular or simple multicellular
D. Heterotrophic only
Answer: Unicellular or simple multicellular
Which of the following is an example of a multicellular organism in the kingdom Fungi?
A. Yeast
B. Mushroom
C. E. coli
D. Amoeba
Answer: Mushroom
Which group of organisms is classified as heterotrophic?
A. Plants
B. Bacteria
C. Protists
D. Animals
Answer: Animals
Which of the following organisms can be classified as a producer in an ecosystem?
A. Lion
B. Mushroom
C. Grass
D. Bacterium
Answer: Grass
What is the defining feature of organisms in the kingdom Archaea?
A. They have a nucleus
B. They live in extreme environments
C. They are autotrophic
D. They are multicellular
Answer: They live in extreme environments
Which of the following is a key feature of the kingdom Animalia?
A. They are autotrophic
B. They are multicellular and heterotrophic
C. They have cell walls made of cellulose
D. They are unicellular
Answer: They are multicellular and heterotrophic