Question

questions 19 and 20 refer to the following. the diagram below shows a particular marine food web. 19 which trophic level has the least available energy in kilojoules in this food web? a phytoplankton b herbivorous zooplankton c baleen whale d killer whale

Explanation:

In a food - web, energy transfer between trophic levels follows the 10% rule, where only about 10% of the energy is passed on to the next level. Higher trophic levels have less available energy. Phytoplankton are primary producers at the base of the food - web with the most energy. Herbivorous zooplankton are primary consumers. Baleen whales are secondary or higher - level consumers. Killer whales are top predators. As the top predator in this food - web, the killer whale is at the highest trophic level and has the least available energy.

Answer:

D. Killer whale