B.Sc

All the courses has greater importance in their own field it depends on your interest which course you want to select.

zoology best for you i think

BTech is preffered over BSc basically bcz its a popular degree, its independent( means you're likely to get a job after 4 yrs). Whereas BSc gives you education and trains you for MSc. MSc then provide you witha job. Both are god actually if you do it from top colleges.

Its u only who have to take the decision. Do what which matches with ur potential and interest.

the best is acording to ur intrest Acording to me is agriculture

Dear student
I would suggest you for zoology in bachelor degree over biotechnology though that's a good field for research but if you do zoology than after bachelor if you want to change your further education into other field that would be possible like :
microbial science
marine science
wildlife
But choose the field according to your interest.
All the best

Hi
You may check here for details.
1. http://svyasa.edu.in/academics/regular-courses/bscyoga/
2. http://www.patanjaliyogacentre.com/yoga-education-bsc-in-kerala.html
The universities offering bsc thru distance mode can be found here.
http://www.gyanunlimited.com/education/list-of-universities-offering-yoga-courses-in-distance-education-and-open-learning-mode/2240/