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Question

Arrange the following levels of organizations in correct order.
Organism, Population, Biosphere, Biomes, Ecosystem, Community

A
Organism → Community → Population → Ecosystem → Biome → Biosphere
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B
Organism → Population → Ecosystem → Community → Biome → Biosphere
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C
Organism → Population → Community → Biome → Ecosystem → Biosphere
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D
Organism → Population → Community → Ecosystem → Biome → Biosphere
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Solution

The correct option is D Organism → Population → Community → Ecosystem → Biome → Biosphere
Ecology is the study of organisms and their interactions with each other in their environment.
It can be studied at various levels.
  • An organism is the basic unit in ecology. It carries out all the life processes in its body, independant of other organisms. E.g: Humans. fish. tiger, etc.
  • Group of individuals of the same species inhabiting a given area form a population. E.g: a school of Rohu fishes in a pond, a pride of lions in a savannah, etc.
  • A group of different populations present in an area is called a community. For example, a group of separate populations of fishes, seahorses and other aquatic animals together form a community of aquatic animals in an ocean.
  • When multiple biological communities interact with each other and with their physical environment they form an ecosystem.
  • A biome is a collection of flora and fauna present in an ecosystem which are adapted to a specific climate. There are different types of biomes present on Earth such as tundra, desert, temperate forest, etc.
  • All biomes together on Earth form a biosphere.


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