What provides the energy which then flows through a food chain ?

The animals shown in the given figure form a part of a food chain What is the order in which energy flows in the food chain formed by the given organisms?

Which of the following statement(s) regarding energy flow is/are false? I. The detritus food chain begins with dead organic matter. II. In aquatic ecosystem, detritus food chain is the major conduit for energy flow. III. In terrestrial ecosystem a larger fraction of energy flows through grazing food chain. IV. Producers belong to the first trophic level of the food chain.

Explain the 'ten percent law' for the flow, of energy, through a food chain. Why do we say that the flow of energy through the food chains is unidirectional ?

In what direction does the energy flow in a food chain? Why as it unidirectional?

Assertion: In Terrestrial, ecosystem much larger fraction of energy flows through the detritus food chain Reason: In an aquatic ecosystem. GFC is the major conduit for energy flow.

Assertion: In Terrestrial, ecosystem much larger fraction of energy flows through the detritus food chain Reason: In an aquatic ecosystem. GFC is the major condult for energy flow.

What is the primary source of energy in a detritus food chain ?