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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
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Distinguish between upright and inverted pyramids.
Distinguish between a food chain and a food web.
Write any two limitations of ecological pyramids.
'The pyramid of energy is always upright.' Explain
Give an example of an ecosystem that shows an inverted pyramid of biomass.
Which of the following organism form the decomposers?
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Pyramid of biomass in terrestrial ecosystem shows sharp decline in
The number of trophic levels in an ecosystem are limited. Comment.
(a) Given below is a pyramid of biomass in an ecosystem where each bar represents the standing crop available in the trophic level. With the help of an example explain the conditions where this kind of pyramid is possible in nature.
(b) Will the pyramid of energy be also of the same shape in this situation? Give a reason for your response.
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(b) Will the pyramid of energy be also of the same shape in this situation? Give a reason for your response.
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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.
| 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.
Which combination can produce an inverted pyramid of numbers?
What does a pyramid of biomass represent?
In most ecosystems, which three ecological pyramids are upright?
Which statement expresses the general pattern of energy across trophic levels?
Which statement is a limitation of ecological pyramids?
