Which of the following represents herbivores in an ecosystem?

In an ecosystem, herbivores are organisms that feed on primary producers, such as plants and algae. They occupy the second trophic level in a food chain, directly consuming producers. These herbivores are classified as primary consumers.

Explanation:

• Producers: Organisms like plants and algae that synthesize their own food through photosynthesis.
• Primary consumers: Herbivores that feed on producers.
• Secondary consumers: Carnivores that feed on primary consumers.
• Decomposers: Organisms like bacteria and fungi that break down dead organic matter, recycling nutrients back into the ecosystem.

Therefore, in a food chain, herbivores are represented by primary consumers.