Question

The diagram below represents a biomass pyramid.
Which statement concerning the energy in this correct?

A. The producer organisms contain the least amount of stored energy.
B. Stored energy decreases from consumer 3 to consumer 2
C. Consumer 3 contains the least amount of stored energy
D. Stored energy increases from the producer to consumer 1.

Answer 1

Hint: The given figure tells about a trophic pyramid. The trophic levels present in the trophic pyramid tells about the flow of energy between the animals and plants. We must remember that a trophic pyramid is sometimes called an ecological pyramid or an energy pyramid which is just a graphical representation which shows that energy flows at each trophic level present in an ecosystem.

Complete answer: As we know that, there is a decrease in the amount of energy flow with every successive trophic level. Thus, the consumer 3 which is at the top obtains less flow of energy. That is the consumer 3 will have the least amount of stored energy.
Since the producers are at the first level of the trophic, they consist of most energy in them. They are not lacking the energy.
As we can observe that the consumer 3 at top and consumer 2 is below consumer 3, from that we can say that the energy decreases from consumer 2 to consumer 3.
As we know, the energy flow decreases while going up the pyramid. So the stored energy decreases from the producer to consumer 1.
So, the correct answer is “Option C”.

Note:
It is a fact that only 10% is approved to the next level as serviceable biological energy. Thus, we can say that the energy of energy generally decreases while moving up the levels of the trophic pyramid.
However, the rest 90% is exploited and stowed by the creatures of the preceding trophic level. Besides, some quantity is lost in the duration of the transfer of the energy. The energy flow occurs only when the animal is eaten by the other.