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प्रश्न
'The pyramid of energy is always upright.' Explain
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उत्तर
The pyramid of energy represents the total amount of energy consumed by each trophic level in a given food chain. An energy pyramid is always upright because the total amount of energy available for utilization in the top levels is less than the energy available in the lower levels. This happens because according to the 10% law of energy transfer, only 10% of the total energy is transferred from one trophic level to another.
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संबंधित प्रश्न
Why the pyramid of energy is always upright? Explain.
“The pyramid of biomass is not always upright.” Explain the statement.
With reference to the levels of an organisation, differentiate between living organisms and non-living objects.
Answer the following question.
What is an ecological pyramid? Compare the pyramids of energy, biomass, and numbers.
Secondary consumers are __________.
Define ecological pyramids.
Name any two organisms which can occupy more than one trophic level in an ecosystem.
What are the shortcomings of ecological pyramids in the study of ecosystems?
(a) Draw a pyramid of numbers where a large number of insects are feeding on the leaves of a tree. What is the shape of this pyramid?
(b) Will the pyramid of energy be also of the same shape in this situation? Give a reason for your response.
| 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.
