Biology Spl

Yes, you can repeat.
All the best.

There is vast scope in the field of microbiology due to the advancement in the field of science and technology. The scope in this field is immense due to the involvement of microbiology in many fields like medicine, pharmacy, diary, industry, clinical research, water industry, agriculture, chemical technology and nanotechnology.
The study of microbiology contributes greatly to the understanding of life through enhancements and intervention of microorganisms. There is an increase in demand for microbiologists in India and globally. A microbiologist can innovate new diagnostic kits, discover new drugs, teach, research, etc.
All the best.

Dear,
After B.Sc in biology, life science or zoology (Hons.), you need to choose specialisation in Masters for further growth.
Microbiology
Stem cell research
Horticulture
Genetic Science
Nano Science
Wildlife Science
Environment Science
Clinical psychology
Choose the right way for your further education and growth.
All the best!

To make a career in the agriculture field, you need do your graduation or post-graduation in agriculture.
For genetics, you need to do Masters in genetics, further, in both fields you have an ample number of opportunities.

Do B.Sc in agriculture and after that, if you are interested, do M.Sc. in agriculture.

Bachelor of Unani Medicine and Surgery (BUMS)
B.A.M.S
B.M.R.Sc
B.P.Th
B.Sc (Nursing)
B.Sc optometry
B.Sc (Hons) medical Technology
B.sc.(Hons) opthalmic Technology
Bachelor of Dental Surgery
Bachelor of Pharmacy
Bachelor of Physician Theraphy
Diploma in Clinical Research
M.B.B.S
NDA
Bankings
IAS
IPS
IES
Civil Aviation

A biology student can join B.Com course. All, you need is to prepare for its entrance that includes data interpretation, general English, logical reasoning and general awareness. You need to crack the entrance to get admission in B.Com.
There are many colleges and universities offering B.Com but you really need to hurry up because the last date for filling up the forms is coming close.
For IPU, the last date for filling up the form is 18th April 2017.
All the best!

I think it is not necessary. Besides, I don't think like you will get to write biology exam in a computer based examinations. Ask with the experts or respected lectures, or ask from the examination authority.