Hello,

First of all in order to appear for Msc or even for that matter integrated MSc-PhD in Mathematics, it's compulsory to have studies mathematics as a subject for at least two years or four semester in graduation degree, since you have done BSc life science and the combinations didn't have maths, so you're are not eligible for IIT JAM Mathematics Paper, even for Chemistry paper it's compulsory to have studied mathematics at 10+2 level, you can go for Biotechnology paper, and IIT JAM is for admission to prestigious institutes all over India, it  does require immense dedication, efforts, sincerity on the part of the candidate to qualify, and more so because in future either candidates go for academia or research, the demands to be in such career is quite different,