Final answer:
The secondary consumer in the food chain is the lizard.
Step-by-step explanation:
The secondary consumer in the given food chain is the lizard.
In the food chain, plants are producers that convert sunlight into food through photosynthesis. The caterpillar is a primary consumer as it feeds on plants. The lizard then feeds on the caterpillar, making it the secondary consumer.
For example, in a garden ecosystem, a caterpillar may consume leaves from a plant. Then, a lizard may feed on the caterpillar as its source of energy.
Learn more about Food chain