Hello,

Know one thing in every specialized field whatever it be it will have a scope and ofcourse you have to work hard for it.Kindly read about all the topics covered under these two courses and find your topic of interest. Microbiology has a good scope in India to answer your question.The scope in this field is immense due to the involvement of microbiology in many fields like medicine, pharmacy, diary, industry, clinical research, water industry, agriculture, chemical technology and nanotechnology hence it has lots of research opportinities

Life science course is very broad  where one get to touch and know about all the major areas of life (biological) sciences. As it is much broader in nature there is no time to go deep in any area.Microbiology is focusing on some major areas like genetics, biochemistry, cell biology, molecular biology. So this course can provide much firmer hand on these topics.However post graduation in these fields provide you with good career opportunitiesThe best thing to do is find your interest based on the topics covered in respective courses. 

good luck