In the grassland chain Grass → Rabbit → Fox, which organism is a primary consumer?

In the grassland chain Grass → Rabbit → Fox, which organism is a primary consumer?

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

Answer: (D)

Energy in a grassland food chain moves from producers to consumers. A primary consumer is the organism that feeds directly on a producer. In this chain, the rabbit eats grass, so it sits at the first consumer level after the producer and is the primary consumer. The fox, which eats the rabbit, is a secondary consumer, and the grass itself is a producer, not a consumer. So the rabbit is the best answer because it directly consumes the grass, the energy source in this chain.

Energy in a grassland food chain moves from producers to consumers. A primary consumer is the organism that feeds directly on a producer. In this chain, the rabbit eats grass, so it sits at the first consumer level after the producer and is the primary consumer. The fox, which eats the rabbit, is a secondary consumer, and the grass itself is a producer, not a consumer. So the rabbit is the best answer because it directly consumes the grass, the energy source in this chain.