M.Sc

The eligibility criteria of M.Sc. Environmental Sciences of JNU is given below. Eligibility B.Sc. Degree or equivalent in any branch of basic or applied Science under 10+2+3 pattern of education or B.E. /B.Tech/MBBS with at least 55% marks.
Therefore, from above you are eligible for M.Sc. Environmental Science.

In LPU, the eligibility of M.Sc Microbiology is pass with 60% aggregate marks in Bachelors degree (applied Medical Science or Medical Science and Allied Medical or Agriculture or Biosciences or Food Science or Medical Lab. Technology or Life Sciences or Veterinary Microbiology and Parasitology or Genetic Engineering and Biotechnology or Clinical Chemistry or Public Health and Allied Sciences or Plant Science) or equivalent, subject to qualifying LPUNEST.

There is good scope of M.Sc mathematics. You can go for lecturer in colleges. Give NET exam and pursue Ph.D. You can do B.Ed and get PGT post in schools. You can apply for JRF in top government institutions. If you do your Masters from regular, it would open up more opportunities.

Look for top colleges/ Universities. M.Sc. In wildlife Science or Marine Biology would be a great prospect.