Ecosystems manufacture their energy using which source?

Question

BlackTom AI · Accepted Answer

When considering how ecosystems manufacture their energy, the central players are organisms that convert inorganic material into organic matter, primarily through photosynthesis or chemosynthesis.
Option 1: Decomposers. These organisms break down dead matter and recycle nutrients, but they do not manufacture energy for the ecosystem; they rely on energy stored in others' biomass.
Option 2: Producers. Producers are the foundational energy creators in most ecosystems, capturing energy from sunlight (or inorganic chemical sources) and converting it into organic compounds that feed the rest of the food web. This is the key process by which energy enters the ecosystem's trophic levels.
Option 3: Tertiary consumers. These are organisms that feed on other consumers and do not generate energy; they obtain energy by consuming prey, not by producing it.
Option 4: Primary consumers. Primary consumers are herbivores that eat producers, obtaining energy secondhand from the energy stored in producer biomass rather than generating it themselves.
Put differently, energy entry into ecosystems originates with producers, while all other groups rely on that produced energy. The distinction hinges on which organisms initiate energy capture and storage rather than on energy transfer alone.

SCI-BIO B Ecology Module Exam

Ecosystems manufacture their energy using which source?

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