Teacher

Yes, with 40% aggregate have qualified NET exam. Once you crack UGC NET examination, he/she will be selected for Junior Research fellowship which will be paid or Appointed as a Assistant Professor in the Indian Universities and Colleges. But, to participate in this entrance test you have to fulfill the required eligibility criteria.

For distance learning, IGNOU is good.

Yes, it is possible.

Do M.Sc. In biology and then qualify PGT exam.

Yes, to become a teacher in primary and secondary, you need to clear B.Ed exam.

It is mandatory to do primary teacher training in BTC and you have to qualify the state level TET or CTET. In most of the states B.Ed is not an essential degree for teachers in primary schools.

The candidates applying for the Junior Research Fellowship must be 28 years old. There will be no upper age limit for the post of Lecturer/Assistant Professor.

Hi Nidhi,
Kindly visit this link:
https://www.shiksha.com/teaching-education/course/nursery-primary-teacher-training-indoss-polytechnia-for-women-rajouri-garden-delhi-170034
Thanks.