Science

Fee structure will be 28000 INR per annum.

To get admission in biotechnology, you should study Biology or biotechnology in 12th with 60%. The fee structure might start from 30000 to 200000 INR. The placement package is average 5 LPA.

Following are the M.Sc. Microbiology eligibility criteria to be followed by the candidates:
Marksheets of classes X and XII are required with a minimum percentage of 50% or more. A Bachelors Degree in Microbiology from a recognised university or an equivalent with a minimum mark of 55% or more. For institutes which hold an entrance exam, students must clear the entrance exam and make it to the cut off or merit list.

Yes you are eligible for every government job but you have to appear for competitive exam like ssc/cgl, Prelims etc.

You can't change your stream but if you want to change stream you need to again pursue 11th with arts you can't change your stream in 12th.

To get admission in M.Sc. In Environmental sciences you in graduation you have to study B.Sc. In Environmental Science or any life Science with 55percent and cutt of are ranges from 200 to 700.

Yes you can get job after graduation in Zoology as a
environmental consultant, Animal clinics
Animal behaviourist
Animal control officer
Animal scientist
Wildlife biologist
Marine scientist
Zoo curator
Conservationist
Forensic expert
Lab technicians
Veterinarians.

If you are interested in NEET then go for another long term course and prepare well but even biotechnology has a huge scope in the market right now. You can go for either NEET or biotechnology.

If you missed your exams you still can write your exams in the next semester period by paying the exam fee and you can appear for exams.

To get admission in M.Sc. In home Science you should have to complete undergraduate with 55 percent in home Science expected cutoff is around 1000.