Grade 8 Biology Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The term that describes the organisms at the top of a food chain is "top carnivores." These organisms, also known as apex predators, play a crucial role in maintaining the balance of ecosystems. They are located at the highest trophic level and have no natural predators of their own. By controlling the populations of other species, they help to maintain biodiversity and the health of the environment.

In a food chain, energy flows from producers, such as plants, which create energy through photosynthesis. Primary consumers, like herbivores, feed on these producers. Decomposers break down dead organic matter, returning nutrients to the soil and completing the nutrient cycle. Top carnivores, being at the top, rely on the lower levels of the food chain for their energy but do not face any predation themselves, which distinguishes their role from that of producers and consumers.