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  4. Which one of the following ecosystem types has the highest annual net primary productivity ?

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Q. Which one of the following ecosystem types has the highest annual net primary productivity ?

MP PMTMP PMT 2010Ecosystem

Solution:

Net primary productivity is the total organic matter stored by producers per unit area per unit time. Gross primary productivity is the total organic matter synthesized by producers in the process of photosynthesis per unit area per unit time. So Net primary productivity = Gross productivity - Respiration and other losses. Tropical rain forests occur over equatorial/ subequatorial regions with abundant warmth and rainfall. Diversity and productivity are maximum as ! compared to other regions.