Advertisements
Advertisements
प्रश्न
Which of the following ecosystems will be more productive in terms of primary productivity? Justify your answer. A young forest, a natural old forest, a shallow polluted lake, alpine meadow.
Advertisements
उत्तर
Primary Productivity can be defined as the rate at which primary producers (Green plants) trap and store solar radiation in form of biomass. This is measured in term of weight (g−2) and in term of energy (Kcal m−2) per year in given time. Primary productivity varies from ecosystem to ecosystem and the ecosystem which possess more producer will be more productive in term of primary productivity. So young forests grow quicker than older. mature forest and are more productive in terms of productivity. The shallow polluted lake and alpins meadow will be less productive because of less number of producers and the high amount of dead matter.
APPEARS IN
संबंधित प्रश्न
What is primary productivity?
Write the equation that helps in deriving the net primary productivity of an ecosystem.
Distinguish between primary and secondary productivity.
What is primary productivity?
Why does primary productivity vary in different types of ecosystems?
Explain what does the equation given below show:
NPP = GPP – R
Answer the following question.
Describe the inter-relationship between productivity, gross primary productivity, and net productivity.
How much of the net primary productively of a terrestrial ecosystem is eaten and digested by herbivores?
Which one of the following ecosystem has the highest annual net productivity?
If A = Gross primary productivity, B = Net primary productivity and C = Respiration losses, then what will be the correct relation between them?
Which of the following ecosystems is most productive in terms of net primary production?
Primary productivity varies from ecosystem to ecosystem. Explain?
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.
In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x(kcal m−2) yr−1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?
