B.Sc Scope

Go for MSc for a better job

It entirely depends on he profile that you are looking for.In case the profile is suitable for both sector and the qualification required is the same then you can opt for it.But such similarities are rare.

Check IISER, IISC and NISAR offer scholarships. For more info, check here:
http://www.inspire-dst.gov.in/

Hi
If you would like to be around precisely IT then MSC-IT is a good choice otherwise MBA-IT will open many doors towards management and senior positions even better for more monetary benefits.

of course yes as a graduate you are eligible to join Indian Navy but only after qualify in the requisite entrance examination and to fulfill the other criteria.

Hi
Marine biology in india has just arrived but is very promising. With 7500 km of coastline, there is plenty to explore. Read about the career as marine biologist here.
http://www.youngbuzz.com/careers/careerdetail/marine-biologist

Yoga is becoming very popular world wide after UNO celebrating World Yoga Day. You can become independent yoga instructor or paid yoga instructor at yoga / health centres. If you enhance your skills by learning some alternate medical techniques with yoga, you can make decent living.

BSc IT is a basic graduation degree equivalent to BCA with more emphasis on Computer Science theory. You can start your IT career in IT industry with BSc IT as junior developer or tester with small companies as major IT companies prefer BTech CS. You will be required to do MSc for good career opportunities.

There is no such specialization in India based on my knowledge. but MBA pharma, general mba which helps to enter in biotech industry.