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Question

A biological community in its environment such as a pond, an ocean, a forest, even an aquarium is known as

This question was previously asked in
CDS I 2017 General Knowledge Previous Year Paper (05-Feb-2017)
The correct answer is

ecosystem

Understanding Ecosystems: Biological Communities and Their Environment

The question asks about the term that describes a biological community interacting with its environment. This is a fundamental concept in ecology.

What is an Ecosystem?

An ecosystem is defined as a community of living organisms (the biological community) interacting with the non-living components of their environment (the physical or abiotic environment). These interactions create a system where energy flows and matter cycles.

Examples of ecosystems given in the question include:

  • A pond
  • An ocean
  • A forest
  • An aquarium

In each of these examples, you have living things (fish, plants, bacteria, trees, animals, etc.) interacting with their surroundings (water, soil, air, sunlight, temperature, etc.).

Evaluating Other Options

Let's consider why the other options are not the correct definition:

  • Biome: A biome is a large-scale geographical area characterized by specific climate conditions and dominant plant and animal life forms. Biomes contain many different ecosystems. Examples include deserts, rainforests, and tundras. While related, it is a broader category than what the question describes (a pond, an aquarium, etc.).
  • Community: A community, in ecological terms, refers only to the collection of all the living organisms (plants, animals, microorganisms) in a particular area. It does not include the non-living physical environment. The question specifically mentions the community *in its environment*.
  • Abiotic environment: This term refers exclusively to the non-living components of the environment, such as water, soil, air, temperature, and sunlight. It does not include the biological community. The question asks for the combination of the community *and* its environment.

Therefore, the term that encompasses both the biological community and its environment is an ecosystem.

Comparison of Ecological Terms
Term Includes Living Organisms (Community)? Includes Non-living Environment (Abiotic Factors)? Scope
Ecosystem Yes Yes Specific area (pond, forest, etc.)
Biome Yes Yes Large geographic area (desert, forest type)
Community Yes No Living organisms only in an area
Abiotic environment No Yes Non-living factors only

Conclusion on Biological Communities and Environment

Based on the definitions, a biological community in its environment is accurately described as an ecosystem. This concept is central to understanding how living things interact with each other and their surroundings.

Revision Table: Key Ecological Concepts

Ecology Terms for Revision
Concept Brief Description
Ecosystem Living organisms + Non-living environment interactions
Community All living organisms in an area
Population Group of individuals of the same species in an area
Habitat The natural home or environment of an organism
Niche The role and position a species has in its environment

Additional Information: Structure and Function of Ecosystems

Ecosystems have both structure and function. The structure includes the types and numbers of organisms present (biotic factors) and the physical conditions (abiotic factors). The function relates to processes like energy flow, nutrient cycling (e.g., carbon cycle, nitrogen cycle), and decomposition. Understanding these aspects helps us appreciate the complexity and interconnectedness within any given ecosystem.

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Similar Questions

  1. Which one of the following air pollutants combine with the haemoglobin of human blood and reduces its oxygen-carrying capacity, leading to suffocation and may cause even death?

  2. Energy and nutrients flow from one trophic level to another in an ecosystem. Which one of the following statements correctly describes the direction of flow of energy and nutrients in an ecosystem?

  3. Which one of the following statements is true with regard to a greenhouse?

  4. Which of the following is/are the function(s) of the environment?

    1. Supplying resources

    2. Sustaining life

    3. Providing aesthetic services

    Select the correct answer using the code given below:

  5. Which one of the following is the Nodal agency in India for the United Nations Environment Programme?


Important Questions from Ecology and Environment

  1. Which day is celebrated as the World Environment Day?

  2. The temperate grasslands of South Africa are called:

  3. The 3 R’s to save the environment are:

  4. The Living Root Bridges are a rare ecological phenomenon seen in which state of India?

  5. Which of the following is NOT a consequence of deforestation?

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