Understanding what is primary productivity requires examining multiple perspectives and considerations. What is Productivity? PrimaryProductivity Primary Productivity refers to the generation of biomass from autotrophic organisms such as plants. Photosynthesis is the primary tool for the creation of organic material from inorganic compounds such as carbon dioxide and water. Primary productivity can be divided into two aspects: Similarly, net Primary Productivity Definition - BYJU'S. Additionally, net Primary Productivity Definition Net Primary Productivity or NPP can be defined as the rate of accumulation of biomass or energy.
The energy utilised during metabolic processes such as respiration is excluded from gross productivity (GPP). NPP is calculated primarily by an increase in the biomass in a unit time per unit area. BYJU'S Online learning Programs For K3, K10, K12, NEET, JEE, UPSC ....
Gross Primary Productivity is defined as the rate of production of organic matter during photosynthesis in an ecosystem. It is utilized by plants during respiration. GPP varies according to tp each tropic level. In this context, that is, only 10 per cent will be the remaining of 100 per cent GPP. The plants 90 per cent of the GPP for their metabolic activities like respiration and so on.
The GPP utilized by ... From another angle, nEET Previous Year Questions (2016-2025): Ecosystem - EduRev. From 2016 to 2025, 24 questions on ecosystem topics were asked, showing a clear upward trend—1 per year (2016–2018), rising to 2–3 (2020–2022), peaking at 6 in 2024, and settling at 4 in 2025. Focus areas included GPP vs.
NPP, energy flow and pyramids, decomposition, nutrient cycling, and productivity units —reflecting increasing emphasis on ecosystem concepts in recent NEET exams. Assertion: Net primary productivity NPP is always more than gross .... Moreover, net primary productivity (NPP) refers to the remainder of the gross production left after its use by the producers in the process of respiration.
Building on this, thus, net primary productivity is the biomass that is available to the heterotrophs in an ecosystem for consumption and is always less than GPP. Justify the following statement in terms of ecosystem dynamics. Gross primary productivity (GPP): Gross primary productivity is the amount of organic matter synthesized by the plants in unit time and area.
Producers make use of solar energy to synthesize organic matter. Nature tends to provide the plants with enough solar energy and nutrients, most times so that the GPP can increase. Net primary productivity: The productivity obtained after subtracting the ... Which ecosystem has the highest productivity?
Productivity: Primary productivity is the amount of energy (measured in kcal per square meter per year) or biomass (measured in grams per square meter per year), accumulated in green plants per unit area per unit time. It depends on the availability of solar radiations, optimum temperature, soil moisture and biogenetic nutrients.
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As demonstrated, what is primary productivity stands as a significant subject worth exploring. Going forward, continued learning in this area will deliver more comprehensive knowledge and advantages.