Give reasons:
Energy flow through an ecosystem is 'one way'

Give reasons: The flow of nutrients through an ecosystem is cyclic.

Energy flow in an ecosystem is ____________

Given scientifc reasons: The flow of energy in the ecosystem is unidirectional.

Question based on paragraph A class of students was taken on an excursion by the school to the banks of a river. They were explained that energy can be transferred from phytoplanktons to humans. This pattem of energy in the ecosystem could be explained as a ‘pyramid of energy’. The pyramid of energy consists of phytoplanktons at the bottom, followed by three successive trophic levels consisting of zooplanktons, fishes and humans respectively. There is a gradual decrease of energy and number of organisms from the base to the apex of the pyramid. The passage of energy is referred to as ‘one way’ transport. Based on the above passage, answer the question Why is the flow of energy through the ecosystem considered as one way transport?

Correct and write the following statements and justify your corrections: The flow of nutrients in an ecosystem is considered to be a one way transport.

What is the ultimate source of energy for all ecosystems on the earth except for the deep sea ecosystem?

Give scientific reasons. The nutrients are supplied to organisms for their growth and development through the ecosystem in a cyclic manner.

Give reasons: Plants in an ecosystem are called producers.