Hi,

One can have career in ( to be very specific) in Microbiology, bio chemistry, Physics, Home science.

These are the fields you can choose other than Agriculture. Home science have many options within, kindly go through the course contents. Yes, ofcourse one can have graduation in bio chemistry, organic chemistry, nuclear physics and mathematics.

Being specific to one particular subject has always been boon.

There are very bright prospects for BAMs and Pharmacy courses after PCB group.
Pharmacy is majorly applicable for study of Pharmaceutical and development interns of products.
BAMS is study of Ayurveda and its applications across the sector.
Both have good demand since India now has ageing population and high disease probability which enables good scope for both careers.
Students can also Choose Bsc Nursing and Bsc Agriculture post MHTCET PCB group exam.

Hope this helps.

Good luck.