can I get a pg seat in microbiology for this academic year please let me know
No, I don't think you will get a seat in this academic year. As the counselings were finished long ago and even semester exams are upcoming in few months.
So,I don't think no college will cooperate with Admissions now.
If you strongly wanted a seat this academic year, visit near by private college and let them know about your admission. They will inform you about it.
Just give a try don't keep any hopes. Best of luck