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प्रश्न
Answer the following question.
What is an ecological pyramid? Compare the pyramids of energy, biomass, and numbers.
उत्तर
Ecological pyramid:
The relation between producers and consumers in an ecosystem can be graphically represented in the form of a pyramid called the ecological pyramid.
Ecological pyramids are of 3 types :
(i) Pyramid of number
(ii) Pyramid of biomass
(iii) Pyramid of energy
(i) Pyramid of number:
The relationship between producers and consumers in an ecosystem can be represented in the form of a pyramid in terms of number is called pyramid of number.
(ii) Pyramid of Biomass:
The relationship between producers and consumers in an ecosystem can be represented in the form of a pyramid in terms of biomass is called pyramid of biomass. It can be upright or inverted.
(iii) Pyramid of energy :
The relationship between producers and consumers in an ecosystem can be represented in the found of the pyramid in terms of the flow of energy called pyramid of energy. Always upright as energy is lost as heat at each step.
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संबंधित प्रश्न
Give diagrammatic representation of pyramid of numbers.
Distinguish between food chain and food web.
'The pyramid of energy is always upright.' Explain
Secondary consumers are __________.
Distinguish between the upright and inverted pyramid of biomass.
In a pyramid of biomass, if the total dry weight (kgm-2) of primary produces is about 809, it well increases at tertiary consumer level up to ______.
Organisms at a higher trophic level have less energy available. Comment.
What are the three types of ecological pyramids? What information is conveyed by each pyramid with regard to structure, function and energy in the ecosystem?
Draw a diagram of pyramid of energy.
| 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.
