Degree

Yes it's a 2 year course and AIMA PGDM is distance but in the certificate nothing of this sort will be mentioned. Are you currently studying in UWBS or you have taken admission only?

Hello Promita,
It's quite good & great that you want to resume studies. It's very good indeed. You will have to approach the college where your studies were interrupted. That college only will guide you about future course of action. Best wishes

Hi,
Obviously, according to me, you should go for M.Sc zoology
& if you are interested in any other field, you can go for that. Overall, you are free to select your goal.
Best regards.

It depends! If you are really in making a career in the management sector at the managerial level, then you can opt to pursue MBA. However, do ensure that you do MBA only from the good and reputed B-schools as they would lead to better overall learning exposure, enhanced networking and good/great placements.
Kindly visit this link to know about the top B-schools in India. https://www.shiksha.com/mba/ranking/top-mba-colleges-in-india/2-2-0-0-0

Yes, but that should be done from a recognized university and it should be a UG certification.

No, It's not possible to get into different college for 4th semester of any course and same goes for BCA.