Final answer:
Endosymbionts are bacteria that live inside the cells or tissues of insects and provide needed nutrients to them.
Step-by-step explanation:
The bacteria that make needed nutrients available to insects can be classified as endosymbionts. Endosymbionts are organisms that live inside the cells or tissues of their host organisms, forming a mutualistic relationship. In this case, the bacteria and insects have a symbiotic relationship in which the bacteria provide nutrients to the insects, while the insects provide a suitable environment for the bacteria to thrive.
Learn more about Symbiotic relationship between bacteria and insects