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प्रश्न
What is the primary productivity of an ecosystem and how is it expressed?
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उत्तर
Primary production is defined as the amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis. It is expressed in terms of weight (g–2) or energy (kcal m–2)
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संबंधित प्रश्न
How are productivity, gross productivity, net primary productivity and secondary productivity interrelated ?
Distinguish between primary and secondary productivity.
Why does primary productivity vary in different types of ecosystems?
State the relation between gross and net primary productivity.
Explain what does the equation given below show :
NPP = GPP – R
How much of the net primary productively of a terrestrial ecosystem is eaten and digested by herbivores?
If A = Gross primary productivity, B = Net primary productivity and C = Respiration losses, then what will be the correct relation between them?
Why is the rate of assimilation of energy at the herbivore level called secondary productivity?
Primary productivity varies from ecosystem to ecosystem. Explain?
Use the information provided in the table given below to answer the following questions:
| Tropic level | Net Production(KJm-2y-1) | Respiration (KJm-2y-1) |
| Top Carnivore | 50 | 35 |
| Carnivores | 420 | 378 |
| Herbivores | 4490 | 4041 |
| Producers | 45000 | 40,367 |
- Calculate the gross primary productivity.
- Analyze the trend in the Net Production from Producers to Top Carnivore. Give a reason for your observation.
