Final answer:
The Lizard is the secondary consumer in this food chain.
Step-by-step explanation:
The Lizard is the secondary consumer in this food chain. A secondary consumer is an organism that feeds on primary consumers. In this food chain, the plant is the producer, the caterpillar is the primary consumer, and the lizard is the secondary consumer as it feeds on the caterpillar. The snake would be considered a tertiary consumer in this food chain as it feeds on the lizard.
Learn more about Food chain