Which of the following is an example of a producer in an ecosystem?

• A. Lion
• B. Earthworm
• C. Oak tree
• D. Mushroom

Answer: (C)

Verified step by step guidance

1. Understand the concept of producers in an ecosystem. Producers, also known as autotrophs, are organisms that can produce their own food using light, water, carbon dioxide, or other chemicals. They are typically plants or algae that perform photosynthesis.
2. Identify the characteristics of each option provided: Lion, Earthworm, Oak tree, and Mushroom. Consider which of these can produce their own food through photosynthesis or chemosynthesis.
3. Recognize that lions are consumers, specifically carnivores, that rely on other organisms for food. Earthworms are decomposers that break down organic matter. Mushrooms are fungi, which are also decomposers, not producers.
4. Focus on the Oak tree. It is a plant that uses photosynthesis to convert sunlight into energy, making it a producer in the ecosystem.
5. Conclude that the Oak tree is the correct example of a producer among the given options, as it fits the definition of an organism that produces its own food through photosynthesis.