Advertisements
Advertisements
प्रश्न
Describe pyramid of energy with the help of diagram.
Advertisements
उत्तर
- A pyramid of energy is always upright. It can never be inverted because when energy flows from a particular trophic level, only 10% passes on as net energy to the next trophic level, and a large amount of energy is always lost as heat at each step.
- In smaller food chains, more energy is available than in the longer food chains.
- There are chain limitations of ecological pyramids. It assumes a simple food chain, something that almost never exists in nature.
- It does not accommodate a food web. Moreover, saprophytes are not given any place in ecological pyramids, even though they play a vital role in the ecosystem.
APPEARS IN
संबंधित प्रश्न
Describe with examples of pyramids of number and biomass.
'The pyramid of energy is always upright.' Explain
Secondary consumers are __________.
Give an example of an ecosystem that shows an inverted pyramid of biomass.
Which ecosystem has the maximum biomass?
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
Which of the following statements is not correct?
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?
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.
