If you have your transfer certificate, you don’t need to submit your original marksheet. But you need to bring your marksheet during counseling for verification. If you don’t have your transfer certificate yet, you will need to submit your original marksheet. You can collect it once you submit your TC.
Yes, it is compulsory for the verification process. You can collect it from the college in a few months.
At the time of admission, you just have to submit the original marksheet and documents, and a checklist is given to you for the submitted documents. These are then sent to the university for verification and documentation.
After the first year, these documents are returned to the students, without the migration certificate and character certificate.