Question

Which statement best describes energy of an ecosystem?

A.The amount of energy entering an ecosystem from the Sun is equal to the amount lost as heat.

B. The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms.

C. The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.

D. The amount of energy entering an ecosystem from the sun does not transfer from organism to organism.

Answer 1

The correct answer is option C

The only source of energy in an ecosystem is the sun. The green plants make food by the help of photosynthesis. These plants are also eaten by the herbivores and then these herbivores animals are eaten by the carnivores animals present in the ecosystem.

The energy from the sun is transferred to herbivores, then from herbivores to carnivores.

Some amount of energy is also lost during the process of energy transfer.

The energy transferred from one level to another + the energy lost

= energy absorbed from the sun.

Answer 2

The energy of the ecosystem can be best described as option C. The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.