Can you get on a plane without a photo I'd?

Possibly. See the following link: https://www.tsa.gov/travel/security-screening/identification#forgotID

I don't think you can even get through TSA security without a photo ID. Once through TSA security, then photo ID is no longer needed. Just the boarding pass.

Only where you need a photo ID is the security point and if you checking your Luggage

Depends on the airline I know southwest and United will not let you