Which of the following organisms is found at trophic level 1 in an ecosystem?

• A. Grass
• B. Fox
• C. Rabbit
• D. Hawk

Answer: (A)

Verified step by step guidance

1. Understand the concept of trophic levels: Trophic levels represent the position an organism occupies in a food chain. The first trophic level is occupied by primary producers, which are typically plants or algae that produce energy through photosynthesis.
2. Identify the role of each organism in the ecosystem: Grass is a plant and acts as a primary producer, converting sunlight into energy through photosynthesis. Foxes, rabbits, and hawks are consumers that rely on other organisms for energy.
3. Recognize that primary producers form the base of the food chain: Since grass is a primary producer, it occupies the first trophic level in the ecosystem.
4. Differentiate between producers and consumers: Producers, like grass, create their own food and energy, while consumers, such as foxes, rabbits, and hawks, consume other organisms for energy.
5. Conclude that grass, being a primary producer, is found at trophic level 1 in an ecosystem, while the other organisms are consumers and occupy higher trophic levels.