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प्रश्न
The number of trophic levels in an ecosystem are limited. Comment.
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उत्तर
In a food chain, only 10% of the total amount of energy is passed on to the next trophic level from the previous trophic level. So, there is a decrease in the amount of energy available at the successive trophic levels. As we move higher up in the food chain the amount of energy diminishes to a level at which it cannot sustain any trophic level, thereby limiting the number of trophic levels.
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संबंधित प्रश्न
Give diagrammatic representation of pyramid of numbers.
In a food chain, the herbivores are represented by
(A) producers
(B) primary consumers
(C) secondary consumers
(D) decomposers
Answer the following question.
What is an ecological pyramid? Compare the pyramids of energy, biomass, and numbers.
'The pyramid of energy is always upright.' Explain
Explain with the help of labelled diagrams, the difference between an upright pyramid of biomass and an inverted pyramid of biomass.
Give an example of an ecosystem that shows an inverted pyramid of numbers.
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 ______.
In an aquatic ecosystem, a mollusc typically belongs to-
Which of the following statements is not correct?
Pyramid of numbers is ______.
What does the base tier of the ecological pyramid represent?
Name any two organisms which can occupy more than one trophic level in an ecosystem.
Organisms at a higher trophic level have less energy available. Comment.
Write a short note on pyramid of numbers and pyramid of biomass.
A graphic representation of the biomass relationship between the producer and consumer in an ecosystem is called ______.
Give a scientific reason:
The pyramid of energy is always upright.
