Q. Which of the following is a biotic component of an ecosystem? (2021)
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A.
Soil
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B.
Water
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C.
Plants
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D.
Air
Solution
Plants are biotic components of an ecosystem, while soil, water, and air are abiotic components.
Correct Answer:
C
— Plants
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Q. Which of the following is a characteristic of a stable ecosystem? (2023)
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A.
High biodiversity
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B.
Low productivity
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C.
Limited interactions
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D.
Constant change
Solution
High biodiversity is a characteristic of a stable ecosystem, as it enhances resilience and stability.
Correct Answer:
A
— High biodiversity
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Q. Which of the following is an example of a decomposer? (2023)
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A.
Fungi
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B.
Grass
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C.
Lion
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D.
Insect
Solution
Fungi are decomposers that break down dead organic matter, returning nutrients to the soil.
Correct Answer:
A
— Fungi
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Q. Which of the following is an example of a primary consumer? (2021)
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A.
Grass
-
B.
Rabbit
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C.
Fox
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D.
Mushroom
Solution
A rabbit is an example of a primary consumer as it feeds on plants (producers).
Correct Answer:
B
— Rabbit
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Q. Which of the following is an example of a tertiary consumer? (2023)
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A.
Grass
-
B.
Rabbit
-
C.
Fox
-
D.
Eagle
Solution
An eagle is an example of a tertiary consumer as it feeds on secondary consumers like foxes.
Correct Answer:
D
— Eagle
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Q. Which of the following is NOT a characteristic of an ecosystem? (2021)
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A.
Energy flow
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B.
Nutrient cycling
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C.
Static population
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D.
Biotic and abiotic interactions
Solution
Ecosystems are dynamic and characterized by changing populations, not static populations.
Correct Answer:
C
— Static population
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