Class 12-science

if u r not eligible in Your place, do DOEACC along with Your degree

pcm/pcb.
it is one of the subjects in bio technology.
specialize in Masters.
doing B.Tech. is prefarable

join for B.Sc.ag. or
2nd year.dip.ag.
do some exercise with Google for eligibility etc.,

if u not interested in engineering., pharmacy career . .
u must do B.Com+CA,no need further to study

engineering, pharmacy,B.Sc,BCA,CA

you can do BBA and after BBA you can do MBA and after MBA you can do CFA

Zoology, botany, biotechnology, forensic Science, medicine etc.

First mention the subject in which you are most interested.

You have a number of options open such as
B.Sc in a subject of your choice like Physics, Chemistry Mathematics,
B.Sc Computer Science
B.Sc IT
BCA
B.Arch and so on.
As for IIT, applicants must have 75% to be eligible for JEE or must fall within the top 20% of the state range.
Decide what to study as per your interest, subjects you enjoy studying the most and confident in. Have an aim and know what you want. Hope it helped.