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प्रश्न
Organisms at a higher trophic level have less energy available. Comment.
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उत्तर
The transfer of energy follows the 10 per cent law – only 10 per cent of the energy is transferred to each trophic level from the lower trophic level. So, higher trophic level have less energy as compared to lower trophic level.
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संबंधित प्रश्न
Give diagrammatic representation of pyramid of numbers.
Why the pyramid of energy is always upright? Explain.
Distinguish between a food chain and a food web.
Describe with examples of pyramids of number and biomass.
In a food chain, the herbivores are represented by
(A) producers
(B) primary consumers
(C) secondary consumers
(D) decomposers
Explain energy pyramid
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.
Write any two limitations of ecological pyramids.
Give an example of an ecosystem that shows an inverted pyramid of biomass.
Which ecosystem has the maximum biomass?
In a tree ecosystem the pyramid of numbers is:
Pyramid of energy in grassland and pond ecosystem is always ______.
Which of the following organism form the decomposers?
Pyramid of numbers is ______.
The number of trophic levels in an ecosystem are limited. Comment.
Write a short note on pyramid of numbers and pyramid of biomass.
(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.
The biomass of a standing crop of phytoplankton is 4 kg/m2, which supports a large standing crop of zooplankton having a biomass of 11 kg/m2. This is consumed by small fishes having a biomass of 25 kg/m2, which are then consumed by large fishes with a biomass of 37 kg/m2.
Draw an ecological pyramid indicating the biomass at each stage and also name the trophic levels. Mention whether it is an upright or inverted pyramid.
Give a scientific reason:
The pyramid of energy is always upright.
