What is the annual net primary productivity of whole biosphere ?
- 170 billion tons (dry weight) of organic matter
- 165 billion tons (dry weight) of organic matter
- 160 billion tons (dry weight) of organic matter
- 155 billion tons (dry weight) of organic matter
The Correct Option is A
Solution and Explanation
Top Questions on Eco-System
- Which of the following pyramid is inverted?
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- Detritivores breakdown detritus into smaller particles. This process is called:
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Given below are two statements:
Statement I: Gause’s ‘Competitive Exclusion Principle’ states that two closely related species competing for the same resources cannot co-exist indefinitely and competitively inferior one will be eliminated eventually.
Statement II: In general, carnivores are more adversely affected by competition than herbivores.In the light of the above statements, choose the correct answer from the options given below:
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- Identify the correct statements:A. Detrivores perform fragmentation.B. The humus is further degraded by some microbes during mineralization.C. Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.D. The detritus food chain begins with living organisms.E. Earthworms break down detritus into smaller particles by a process called catabolism.Choose the correct answer from the options given below:
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In the equation GPP - R = NPP
GPP is Gross Primary Productivity
NPP is Net Primary ProductivityR here is ________.
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Concepts Used:
Ecosystem
An ecosystem is a structural and functional unit of ecology where the living organisms come in to interact with each other and the surrounding environment.
Structure of the Ecosystem:
The structure of an ecosystem is distinguished by the organization of both biotic and abiotic components. This involves the distribution of energy in our environment. It also comprises the climatic conditions prevailing in that particular environment.
There are two main components of the structure of an ecosystem, namely:
- Biotic Components
- Abiotic Components
The biotic and abiotic components are interconnected in an ecosystem. It is an open system where the energy and components can flow through the boundaries.