Advertisements
Advertisements
प्रश्न
The number of trophic levels in an ecosystem are limited. Comment.
Advertisements
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.
APPEARS IN
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
Explain energy pyramid
Which organisms constitute the last trophic level?
“The pyramid of biomass is not always upright.” Explain the statement.
'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.
In a tree ecosystem the pyramid of numbers is:
Which one of the following is not used for construction of ecological pyramids?
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 ______.
Pyramid of biomass in terrestrial ecosystem shows sharp decline in
In an aquatic ecosystem, a mollusc typically belongs to-
Which of the following statements is not correct?
Pyramid of numbers is ______.
Organisms at a higher trophic level have less energy available. Comment.
(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.
Give a scientific reason:
The pyramid of energy is always upright.
Describe pyramid of energy with the help of diagram.
