Question:
Which of the following is considered as the main ecological service?
Which of the following is considered as the main ecological service?
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Think of the process on which all food chains depend.
Updated On: Nov 12, 2026
- Waste decomposition and detoxification
- Fixation of atmospheric \(\text{CO}_{2}\) and release of \(\text{O}_{2}\)
- Purification of water and air
- Genetic resources including crop improvement
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
Ecosystem services are the benefits that people and other organisms obtain from natural ecosystems.
Step 2: The basic service
Photosynthesis by producers removes \(\text{CO}_2\) from the air and releases \(\text{O}_2\). This supplies oxygen for aerobic life and organic matter for every food chain.
Step 3: Other services
Decomposition, purification of air and water, and genetic resources are also services, but they depend on this base.
Step 4: Conclusion
Fixation of \(\text{CO}_2\) and release of \(\text{O}_2\) is the main ecological service.
Final Answer:
Fixation of carbon dioxide and release of oxygen is the main ecological service. \[ \boxed{\text{(B) }\text{Fixation of atmospheric } \text{CO}_{2} \text{ and release of } \text{O}_{2}} \]
Ecosystem services are the benefits that people and other organisms obtain from natural ecosystems.
Step 2: The basic service
Photosynthesis by producers removes \(\text{CO}_2\) from the air and releases \(\text{O}_2\). This supplies oxygen for aerobic life and organic matter for every food chain.
Step 3: Other services
Decomposition, purification of air and water, and genetic resources are also services, but they depend on this base.
Step 4: Conclusion
Fixation of \(\text{CO}_2\) and release of \(\text{O}_2\) is the main ecological service.
Final Answer:
Fixation of carbon dioxide and release of oxygen is the main ecological service. \[ \boxed{\text{(B) }\text{Fixation of atmospheric } \text{CO}_{2} \text{ and release of } \text{O}_{2}} \]
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