Class 12-science

You can look for following options:
Bachelors in Arts-You can do BA by taking honours either in economics, political Science, language, sociology, history, geography, home science and philosophy. This line has the scopes in teaching in schools, colleges, universities so you can opt for B.Ed (Bachelor of Education) after graduation.
Bachelors in Commerce:
Commerce people can complete their graduation with honours in any of the commerce subjects like accountancy, finance, business administration and economics depending on the marks scored on the specialised subject. You can also choose to go for teaching in schools, colleges, universities and can also prepare for the UGC NET exam. You can directly study MBA after graduation, go for M.Com too for another two years and then research for the doctorate degree.
Bachelors in Science:
Candidates of science stream taking honours in physics, chemistry, and biology can choose to be a teacher in different Science institutes, can also complete the M.Sc in your specialised honour subject, prepare to qualify the UGC NET exam. After post graduation, you can do research for the Ph.D degree. This usually takes another 3-5 years. You also have a career scope in the field of biotechnology, microbiology, bioinformatics and biochemistry.