What Is The Ultimate Source Of Energy That Drives The Food Chain. Plants absorb and convert this energy which insects birds and other herbivores transfer up the food chain until it reaches humans. The ultimate source of the energy in food is the sun.
This is because they produce their own food. So in any ecosystem energy flows through food chain in unidirectionl manner. Ecosystems at deep-sea hydrothermal vents do not rely on energy from the sun.
The sun is the source of energy in a given ecosystem.
The ultimate source of nutritional energy in the food chain for tube worms that live around hydrothermal vents is A. FLOW OF ENERGY FROM FOOD TO EATER. The ultimate fate of energy in ecosystems is for it to be lost as heat. This is because they produce their own food.
