Advertisements
Advertisements
Question
Organisms at a higher trophic level have less energy available. Comment.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Give diagrammatic representation of pyramid of numbers.
In an ecosystem dominated by trees, the pyramid (of numbers) is ______ type.
Distinguish between a food chain and a food web.
Answer the following question.
What is an ecological pyramid? Compare the pyramids of energy, biomass, and numbers.
Answer the following question.
Write any two limitations of ecological pyramids.
Explain with the help of labelled diagrams, the difference between an upright pyramid of biomass and an inverted pyramid of biomass.
Secondary consumers are __________.
Give an example of an ecosystem that shows an inverted pyramid of biomass.
Which one of the following is not used for construction of ecological pyramids?
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
In an aquatic ecosystem, a mollusc typically belongs to-
What are the shortcomings of ecological pyramids in the study of ecosystems?
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?
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.
