Question

In a food chain consisting of three trophic levels,if 500 kj of energy is available at d producer level, what will b d energy available at d third trophic level

Answer 1

Explanation:

Hint: 10 percent of the energy in the food is fixed into its flesh as animals are eaten and are usable for the next trophic stage (carnivores or omnivores). When an animal is eaten by a carnivore or an omnivore, just about 10 percent of the energy is fixed at a higher level in its flesh.

Complete answer:

There is a lack of energy in an ecosystem along with the food chain and only 10 percent of the energy available at each trophic stage is passed onto the next trophic level. Thus, if 5000 KJ of energy is available initially, 500 KJ of energy will be available at the next (or second) trophic level, 50 KJ of energy will be available at the next (or third) trophic level, and 5 KJ of energy will be available at the next (or fourth) trophic level.

Additional Information: In ecology, the food chain is the series of transfers of matter and energy from organism to organism in the form of food. As most species eat more than one form of animal or plant, food chains intertwine locally into a food web. The primary source of food plants, which transform solar energy into food through photosynthesis. A plant-eating animal is consumed by a flesh-eating animal in a predator chain. A smaller organism eats part of a bigger host in a parasite chain and can itself be parasitized by even smaller species. Microorganisms survive on the dead organic matter within a saprophytic chain.

So, the correct answer is ‘5000KJ’.