Environment And Road Safety Education And Violence Against Women And Children And Drug Abuse 2020 Exam With Answers

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9.

Which of the following ecological pyramid is always upright?

A: Pyramid of number

B: Pyramid of energy

C: Pyramid of biomass

D: Pyramid of species richness

The answer is: B

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Explanation

Correct option is B)

Pyramid of energy is always upright because when energy flows from particular trophic level to next trophic level, some energy is always lost as heat at each step. So, the energy in subsequent trophic levels is always less than the energy in the previous level. Hence pyramid of energy is always upright and can never be inverted.

So, the correct answer is 'Pyramid of energy'.