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प्रश्न
Which organisms constitute the last trophic level?
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उत्तर
The last trophic level in an ecosystem is formed by top consumers. These are carnivores or predators that are not usually preyed upon by others. They occupy the highest trophic level in the food chain.
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संबंधित प्रश्न
Give diagrammatic representation of pyramid of numbers.
Describe with examples of pyramids of number and biomass.
With reference to the levels of an organisation, differentiate between living organisms and non-living objects.
Write any two limitations of ecological pyramids.
Which ecosystem has the maximum biomass?
In a tree ecosystem the pyramid of numbers is:
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
Write a short note on pyramid of numbers and pyramid of biomass.
(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.
| 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.
