B.Sc

Physical Science

yes it is possible search agricultural college, procedure and apply

early June and late may in most of the colleges

if you meant chemistry, botany and zoology, I must say you to complete masters (m.sc) in zoology. That will be easier to go for you

Manbeer, PAU is one of the best universities in India but for admission there you need to clear an entrance test. If you have given the test wait for the counseling and admission result. You can also try for admission in Punjabi University, Patiala. In case you have not given any test then route towards private institutions that are offering B.Sc agriculture.
They all are UGC approved. Some of these institutes also offer scholarships to students.

b- tech ,bsc it does not so many opportunity

it's all about the interest you belong to. But looking toward the scopes, for fast job opportunity Engg will be better but to fly high much high.B.Sc can open large scopes

probably zoology is having more job opportunities. Through bsc zoology you can also go for MSC in aquaculture. it is the most upcoming bsc course with n number of jobs. Through aquaculture you can easily grab jobs either nationally or internationally. so make a right decision.!

there are lots of Master program you can go for Msc. thats good for you