Yes. With your application you're to send a photocopy.
You'd take the original to your interview. And then there's a good chance they won't look at it, based on how fluent you speak (but you should still take the original). They don't ask for an original to be submitted in a closed envelope, the way universities/colleges tend to ask for, so if you have a transcript or diploma in your files you can just use that.
Every adult (even those who don't have to take the test on account of age) has an interview with a citizenship officer, after the citizenship test, during which they'll verify your physical presence calculation (against the stamps in your passport) and the original documents of which you sent photocopies.
They may also make a bit of small talk (to check your language skills, if that's relevant) and they may ask questions about your travels, your work, etc (to check if you've been truthful about your activities and residence during your eligibility period).
Some interviewers seem to be grumpier than others. I had a pleasant interaction with mine, but others found the interaction less enjoyable. In any case, this document check/interview tends to be quite short. Most people have maybe a 5 minute long interview, only rarely will it run to 10 minutes.
If you fail your citizenship test twice, you'd have a more extensive (and in some ways more formal) interview, which may be with a citizenship officer or a citizenship judge. That interview tends to last 60 to 90 minutes, so is way more extensive than the one that happens on a (regular) test day (Described at the bottom of
https://www.canada.ca/en/immigration-refugees-citizenship/services/canadian-citizenship/become-canadian-citizen/citizenship-test.html).
