Hello Surender,

See, this depends on which field you wish to make your careers in. Life Science comprises of Microbiology, Zoology, Botany, Chemistry, Biochemistry and Food Technology. If you wish to make careers in any of these fields, there would be three options Chemistry being Compulsory to attempt and you will be required to attempt two more from rest options as mentioned above.

While Biotechnology does not have any options. Choose wisely like in which field you wish to make your careers. 

All the best!