Final answer:
True, termites indeed rely on symbiotic protozoa and bacteria within their guts to digest wood, making it an example of mutualistic symbiosis.
Step-by-step explanation:
The statement that termites could not eat wood without other animals living inside them that digest the wood is an example of symbiosis is true. Termites have a mutualistic relationship with protozoa and bacteria in their guts, which allows them to digest cellulose found in wood, a process that termites cannot do on their own. This relationship is essential for the nutrition and survival of termites, as it permits them to obtain energy from wood, their primary food source. In return, the protozoa and bacteria receive a protective environment and a consistent supply of nutrients from the termite's wood-chewing actions. This mutualistic form of symbiosis benefits both the termites and their internal symbionts.