CBSE 12th

no problem. only you should be good in maths. i am also of your kind

Which field interests you? Banking sector or management sector?
If banking, go for BCom and then you can do MCom or LLB or CA or CMA or CFA.
If management, take up BBA and then do MBA from a good college and get highly paid.
BBA can take you to MBA only whereas BCom has lots of options as you see above.
1 more thing: After doing BBA or BCom, you become eligible for sitting in compititive exams like IBPS, UPSC, SBI-PO, SBI-Clerk and other bank and railway exams to get a job.

PCB is always taken for getting into medicals. You should not have taken biology if you never wanted to go for medicals. Which field interest you? You can do BBA and then pursue for MBA. You can do BCom and then pursue for MCom or LLB or MBA. But see, some colleges want maths in 12th for BBA and BCom. U had maths? You can do BA courses and then go for MA. Hotel Management is also an option, if you want to go there. Where do you want to go? Whats your aim?

the best is acording to ur intrest Acording to me is agriculture

Dear student
I would suggest you for zoology in bachelor degree over biotechnology though that's a good field for research but if you do zoology than after bachelor if you want to change your further education into other field that would be possible like :
microbial science
marine science
wildlife
But choose the field according to your interest.
All the best

Yes, you can do. There are colleges like StXaviers that take students who had maths. But there are colleges that take students who did not have maths. Just check the your eligibility in the college in which you want to apply before applying.

No, it's not necessary to have mathematics.