Question

The concept of trophic structure in a community emphasizes the
A. prevalent form of vegetation
B. keystone predator
C. feeding relationships within a community
D. effects of coevolution

Answer 1

An ecosystem can be referred to as the collection and interaction of the biotic as well as the abiotic components of the environments. There are several different trophic levels found in an ecosystem. Trophic levels represent the position of a living organism in a food web.

Complete answer:
The trophic level can be defined as the position occupied by an organism in the food chain. The first trophic level is called the base of the ecosystem. It possesses the highest energy concentration which is transferred to the organisms present at different trophic levels. The various trophic levels of an ecosystem are producers, primary consumers, secondary consumers, tertiary consumers, and apex predators. In an ecosystem, the plants are the producers and they are the base of all trophic levels.
The trophic structure may also be different based on the function of the trophic position. The species present at low-trophic-level, they are controlled by predation, and the species present at the high-trophic-level are controlled by competition.
The concept of trophic structure can be described as a diagram representing how energy passes through an ecosystem. At the base, there are green plants and they can obtain energy from the sun and can store it in a chemical form of energy. When herbivores eat plants the energy steps up the trophic chain. After that when herbivores get eaten, this energy steps up again. Thus, the trophic structure in a community represents the feeding relationships between species where the first level is assumed by the producers and then there are primary and secondary consumers, decomposers, and so on they form a successive trophic level. The trophic structure is the division of biomass between different trophic levels.
Thus, the concept of trophic structure in a community emphasizes and depends on the feeding relationships within a community and the involved organisms.

Therefore, the correct option is option C.

Note: There are different types of organisms present in an ecosystem. Among them, only green plants can produce food, and this energy flows to the other organisms in a systematic way of feeding each other. All the organisms are present in any one position of various trophic levels. The feeding relationships within a community are known as the trophic structure.