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Which of the following is a defining characteristic of the kingdom Bacteria?
A. They have a true nucleus
B. They are unicellular and lack a nucleus
C. They are autotrophic
D. They are multicellular
Answer: They are unicellular and lack a nucleus
Subjects: Biology, Biological Classification
What is the primary function of bacteria in ecosystems?
A. To produce food for plants
B. To break down and decompose organic matter
C. To synthesize vitamins for animals
D. To perform photosynthesis
Answer: To break down and decompose organic matter
Subjects: Biology, Biological Classification
Which of the following groups of organisms are autotrophic and produce their own food through photosynthesis?
A. Animals
B. Fungi
C. Plantae
D. Archaea
Answer: Plantae
Subjects: Biology, Biological Classification
Which of the following organisms is an example of a multicellular eukaryote in the kingdom Fungi?
A. Amoeba
B. Mushroom
C. Bacterium
D. Euglena
Answer: Mushroom
Subjects: Biology, Biological Classification
What is a key feature of the kingdom Protista?
A. All members are multicellular
B. They can be both autotrophic and heterotrophic
C. They are all eukaryotic and multicellular
D. All members have chlorophyll
Answer: They can be both autotrophic and heterotrophic
Subjects: Biology, Biological Classification
Which kingdom contains organisms that can survive in extreme conditions, such as high heat or salinity?
A. Plantae
B. Archaea
C. Fungi
D. Bacteria
Answer: Archaea
Subjects: Biology, Biological Classification
Which of the following is characteristic of members of the kingdom Fungi?
A. They are autotrophic
B. They are multicellular organisms that can photosynthesize
C. They have a cell wall made of cellulose
D. They absorb nutrients from decaying organic material
Answer: They absorb nutrients from decaying organic material
Subjects: Biology, Biological Classification
What is the primary role of autotrophic organisms in ecosystems?
A. To break down organic matter
B. To produce oxygen through photosynthesis
C. To absorb nutrients from decomposing matter
D. To act as predators
Answer: To produce oxygen through photosynthesis
Subjects: Biology, Biological Classification
Which kingdom includes organisms that can carry out both aerobic and anaerobic respiration?
A. Archaea
B. Fungi
C. Animalia
D. Bacteria
Answer: Bacteria
Subjects: Biology, Biological Classification
Which of the following best describes organisms in the kingdom Animalia?
A. They are unicellular and autotrophic
B. They are multicellular and heterotrophic
C. They are multicellular and autotrophic
D. They are unicellular and heterotrophic
Answer: They are multicellular and heterotrophic
Subjects: Biology, Biological Classification
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