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प्रश्न
Describe pyramid of energy with the help of diagram.
उत्तर
- A pyramid of energy is always upright. It can never be inverted because when energy flows from a particular trophic level, only 10% passes on as net energy to the next trophic level, and a large amount of energy is always lost as heat at each step.
- In smaller food chains, more energy is available than in the longer food chains.
- There are chain limitations of ecological pyramids. It assumes a simple food chain, something that almost never exists in nature.
- It does not accommodate a food web. Moreover, saprophytes are not given any place in ecological pyramids, even though they play a vital role in the ecosystem.
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संबंधित प्रश्न
Distinguish between Upright and inverted pyramid.
With reference to the levels of an organisation, differentiate between living organisms and non-living objects.
Distinguish between the upright and inverted pyramid of biomass.
Which of the following organism form the decomposers?
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
Pyramid of numbers is ______.
The number of trophic levels in an ecosystem are limited. Comment.
What are the shortcomings of ecological pyramids in the study of ecosystem?
Give scientific reasons:
The pyramid of energy is always upright.
| In a forest ecosystem, a large population of insect feeds upon a banyan tree. Several small birds feed upon these insects. The small birds are fed upon by big-sized birds. |
- With respect to this ecosystem, draw a pyramid for each biomass and a pyramid of number.
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If 20,000 Kcal energy is available at the level of insects, calculate the amount of energy available at the level of big-sized birds.
