Question

which of the following best describes the flow of energy involving large piscivorous fish in the food web? they gain energy from wading birds and provide energy to bald eagles and ospreys. they gain energy from bald eagles and ospreys and pass energy to small planktivorous fish. they gain energy by eating small planktivorous fish and transfer energy to bald eagles and ospreys.

Explanation:

In a food web, energy flows from producers to consumers, with each consumer gaining energy by eating lower - trophic - level organisms and transferring energy to higher - trophic - level organisms. Large piscivorous fish (fish that eat other fish) should gain energy by consuming smaller fish (like small planktivorous fish) and then be preyed upon by larger predators such as bald eagles and ospreys, thus transferring energy to them.

• The first option is wrong because wading birds would likely be predators of the fish, not a source of energy for the fish.
• The second option is wrong as bald eagles and ospreys are predators of the large piscivorous fish, so the fish can't gain energy from them; also, large piscivorous fish are larger and would not pass energy to smaller planktivorous fish (they would eat them, not the other way around).
• The third option is correct as large piscivorous fish eat small planktivorous fish to gain energy and are then eaten by bald eagles and ospreys, transferring energy to them.

Answer:

They gain energy by eating small planktivorous fish and transfer energy to bald eagles and ospreys.