Answer» - Plants of the ecosystem store some of the solar energy in the form of food.
- Before reaching the decomposers, this energy is passed on from one trophic level to the next.
- At every trophic level, some amount of energy is used by the organism for its own life processes and some amount of energy is lost to the surroundings.
- Decomposers dissipate some amount of energy in the form of heat.
- However, no part of the energy ever returns to the Sun. Hence, such passage of energy is referred to as ‘one way’ transport.
- Therefore, energy is maximum at the base of the pyramid and is least at the apex, e.g.
- Phytoplankton which form the base of the pyramid have 10,000 kcal of energy while humans at the apex have 10 kcal of energy.
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