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Question
What is the primary productivity of an ecosystem and how is it expressed?
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Solution
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)
RELATED QUESTIONS
Write the equation that helps in deriving the net primary productivity of an ecosystem.
What is primary productivity?
Secondary productivity is rote of formation of new organic matter by ______.
The biomes energy available for consumption by herbivores is called ______.
Which one of the following ecosystem is most productive in term of net primary production?
Productivity is the rate of production of biomass expressed in terms of ______.
Justify the following statement in terms of ecosystem dynamics. “Nature tends to increase the gross primary productivity, while man tends to increase the net primary productivity”.
The primary productivity in an ecosystem is expressed as ______.
- gm-2 yr-1
- gm-2 yr
- Kcal m-2 yr-1
- Kcal m-2
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.
Which of the following is the unit of productivity of an Ecosystem?
