B.Sc Biotechnology

It has excellent scope, you can work as research scientist, technician with pharma, biotech and many more industries.

If you want to precede your career in Biotechnology them I will recommend you to go for B.Tech biotech instead of B.Sc because B.Tech has batter prospects in future then B.Sc. and biotechnology is highly in demand in Canada so.
Some colleges in India have admission based on their entrance exam so kindly apply for it if you want your career to be in biotech.

No, maths is not compulsory.

To get good job opportunities you should opt for Masters in plant biology followed by MBA.

It would be Biotechnology.

Hi,
This is a very interesting question which you have posted, I am not an expert on either field, but would like to give my input.
In a recent tweet, Bill Gates has suggested, that students should go for Biotechnology as a career choice as it has many job opportunities worldwide.
BA Malayalam will also be a good option if you see yourself working a translator or voice-over artist.

For better career, B.Tech in biotechnology is very good. You will have joint degree.You can approach both the fields B.Tech & Biological. It will be better, if you are able to do it.