Question:
Basic unit of ecological hierarchy is ___________.
Basic unit of ecological hierarchy is ___________.
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The levels run organism, population, community, ecosystem, biome, biosphere.
Updated On: Nov 12, 2026
- Biome
- Community
- Population
- Organism
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Ecological organisation goes from the simplest level to the most complex.
Step 2: Order of levels
Organism, population, community, ecosystem, biome and biosphere.
A single living individual that interacts with its environment is the lowest level.
Step 3: Why the other options fail
A population, a community and a biome are all made of many organisms.
Final Answer:
The basic unit is the organism. \[ \boxed{\text{(D) }\text{Organism}} \]
Ecological organisation goes from the simplest level to the most complex.
Step 2: Order of levels
Organism, population, community, ecosystem, biome and biosphere.
A single living individual that interacts with its environment is the lowest level.
Step 3: Why the other options fail
A population, a community and a biome are all made of many organisms.
Final Answer:
The basic unit is the organism. \[ \boxed{\text{(D) }\text{Organism}} \]
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