Which term describes the living components of an ecosystem?

• A. Biotic
• B. Mortality
• C. Cell
• D. Fungi

Answer: (A)

Biotic describes the living components of an ecosystem. It includes all living things—plants, animals, microbes—that interact with one another and with nonliving factors like soil, water, and climate. This umbrella term covers producers, consumers, and decomposers, creating the web of life in an environment. The other options don’t fit as the living parts of an ecosystem: mortality is about death rates, a cell is a basic unit of life not the ecosystem as a whole, and fungi are just one type of living organism that falls under the broader biotic category.