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Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In the light of the above statements, choose the most appropriate answer from the options given below:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In the light of the above statements, choose the most appropriate answer from the options given below:
Explanation
Statement I is correct; Statement II is incorrect as total organic matter production is Gross Primary Productivity (GPP).
Detailed Solution
Solar energy is the ultimate energy driver for all ecosystems except deep-sea hydrothermal vents. The total rate of organic matter synthesis during photosynthesis is Gross Primary Productivity (GPP). Net primary productivity equals $NPP = GPP - R$. Hence Statement I is correct and Statement II is incorrect.