Your personal assertion is quite wrong at a fundamental level. Biology refers to the field or study, not individual specimens. The field is comprised of the understanding that people over time compiled on nature, along with arbitrary frameworks that help people organize and reason about the topic.
Take the concept of species, and species classification. A specimens exists regardless of being classified or not. However, the same specimen can be classified differently depending on the state of the body of knowledge at the time. In some cases you had species being reclassified due to new findings, such as genetic tests.
Once you understand this, you learn that you can't claim that a field of study is anything other than abstractions and partial and incomplete observations compiled form people throughout time.
In any case I think you have an overly narrow definition of learning that we're unlikely to come to terms over.
Those boundaries are completely imaginary and don't exist in reality. In reality there's no biology, there's only elementary particles interacting physically. Whether you agree with someone else to classify a phenomenon as biological or chemical, you're not refining your knowledge of the real world, you're just performing an organizational task.
But, say, how many times the tympanic ear evolved independently is a real phenomenon that can be investigated, and it's something that you're either correct, incorrect, or ignorant about. If I tell you it evolved five times, what more can either of us gleam about the real facts by just discussing this factoid back and forth, if neither of us has access to any additional knowledge or way to put this datum to the test?
The equivalent for biology would be to grow a plant or a few plants and animals successfully. That's operational at a certain level, you could also be operational at a lower or higher level.
EDIT: Perhaps not the best example, because the size and shape of the Earth are data that are repeated often enough that an LLM would be unlikely to quote it grossly incorrectly, but I think my point still comes across.