What is a series of organisms each dependent on the next as a source of food?

• A. Food web
• B. Food chain
• C. Food pyramid
• D. Energy cycle

Answer: (B)

A series of organisms each dependent on the next as a source of food is referred to as a food chain. In a food chain, each organism occupies a specific position in the chain, starting with producers that create energy through photosynthesis, followed by primary consumers that eat those producers, and then secondary consumers that eat the primary consumers. This linear flow illustrates how energy and nutrients move through an ecosystem, emphasizing the direct relationships between each organism and its food source.

Understanding this concept is crucial because it highlights the interconnectedness of living things within an ecosystem. It also helps explain the impact that changes in one population (like a decline in a specific species) can have on the entire food chain, affecting all dependent organisms. In contrast, a food web represents multiple interconnected food chains, a food pyramid illustrates the energy levels among different trophic levels, and an energy cycle emphasizes the movement of energy through various processes in an ecosystem.