Hi
Well this is a necessary question people think that there are not much options after doing PCB -" so you opted for medical (MBBS) if you choose biology .
Below is a list of streams or options available other than MBBS after doing you 10+2 with biology .

1. Botany -study of plants .
    Researcher, teacher , taxonomists, environmental  consultant

2. Zoology-study of animal kingdom
     Researcher, teacher, wildlife biologist ,zoo curator

3.microbiology- study of microscopic organisms
    Health sector, food industries, clinical researcher

4. Biochemistry- study of chemical processes and substances.
     Biomedical scientist, forensic scientist, pharmaceutical field ,

5. Environmental science- study of components of environment
     Water treatment plants , fertilizer plants, researcher

6. Genetics- study of genes and their functions
    Geneticist, immunologist, forensic DNA analysist

These are just some of them there are many more .you can choose according to your interest.

I hope I was helpful
All the best

Hello. 

We have collected best courses after 12th bipc for students and also Job oriented courses after 12th BIPC group. There are some well known best degree courses after 12th BIPC such as BHMS (Bachelor of Homeopathic Medicine & Surgery), BAMS (Bachelor of Ayurveda Medicine & Surgery), B. Pharm (Bachelor of Pharmacy), B. Tech. ( Bachelor of Technology in Biotechnology), BE in Environmental Engineering, BDS (Bachelors of Dental Science), BPT (Bachelor of Physiotherapy) and B. sc.( Bachelor of Science) etc.

Job oriented courses after 12th BIPC

Viewers those who are looking for latest courses offered after 12th BIPC can check this post completely to know about the courses which are available for you. List of Degree courses after 12th BIPC are provided below. In the below tabular form we have listed out Courses to Do After 12th BIPC, check it clearly.

List of Career Options available after 12th Biology

MBBS (Bachelor of Medicine, Bachelor of Surgery)
BHMS (Bachelor of Homeopathic Medicine & Surgery)
BAMS (Bachelor of Ayurveda Medicine & Surgery)
B. Pharm (Bachelor of Pharmacy)
B. Tech. ( Bachelor of Technology in Biotechnology)
BE in Environmental Engineering
BDS (Bachelors of Dental Science)
BPT (Bachelor of Physiotherapy)
B. sc.( Bachelor of Science)

Forensic Science :

B.Sc. in Forensic Sciences
B.Sc. in Forensic Sciences
B.Sc. in Life Science, Chemistry, Forensic Science
Diploma in F/Sciences (Ballistics and Finger Prints)
Diploma in Forensic Science (Cyber Crimes)
Diploma in Forensic Science (Computer Forensics)
Diploma in Criminology and Forensic Science for Police personnel

Zoology :

B. Science in Aquaculture (Fishery Microbiology)
B.Sc. in Advanced Zoology and Biotechnology
B.Sc. in Zoology
B.Science (Hons) in Zoology
in Zoology and Animal Biotechnology

Biotechnology :
B.E. in Biotechnology
B.Tech (Industrial Biotechnology)
B.Science in Biotechnology
B.Sc. in Biotechnology and Bio informatics
Diploma in Biotechnology

Agriculture :
B.Sc. (Agriculture Mktg and Business Management)
B.Sc. (Bio-chem and Agricultural Chemistry)
B.Sc. in Crop Physiology
B.Sc. in Entomology
B. Sc in Agronomy
B. Sc in Agricultural Meteorology
B. Sc in Agricultural Biotechnology
B. Sc (Hons) in Agriculture
B. Sc in Agriculture.
B.Science in Agricultural Eco and Farm management
B. Sc in Agricultural Statistics

Geology :
B. Sc. (Hons) Geology
B. Science in Geology
PG Diploma in Geology (Ground water)
PG Diploma in Environmental Geology
PG Diploma in Engineering Geology

Textile :
B.E in Man Made Fiber Technology
B.E in Textile Technology
B.E in Textile Chemistry
Diploma in Fabrication Tech and Erection Eng
Diploma in Textile Tech
Diploma in Textile Eng

Microbiology :
Diploma in Industrial Microbiology
Diploma in Clinical Microbiology
Diploma in Clinical Pathology
B.Science (Hons) in Microbiology
B.Science in Microbiology

Food Technology :
B. Sc in Food Preservation and Processing
B. Sc in Food Processing
B. Sc in Food Processing and Technology
B. Sc in Food Storage, Preservation and Food Tech.
B. Sc in Food Technology (Bio-Chemical Engineering)
Diploma in Fish Processing Technology
Diploma in Sugar Technology

MBBS is one of the most proficient and toughest courses which is an under-graduate degree.
There are also huge number of courses which you can be opted by you such as Para medical, Nursing, Physiotherapy,Sanitary Inspector, X-ray Radiology,Optometry and Neuroscience courses etc.

Hope this is helpful. 

Good luck.