Tarun, JNU has changed its exam pattern last year. There is no specific syllabus designed for M.Sc Life Sciences. You have to prepare according to the UGC approved syllabus in your B.Sc Subjects at Graduation level. Though the exam pattern has changed, the syllabus remains the same and so the previous papers enlisted in our article might help you in your preparation: https://university.careers360.com/articles/jnu-sample-paper