Agriculture

For admission in TNAU, she will have to face its entrance exam. The +2 marks do not make the merit list, so prepare for the best and score a good rank. Then she can get admission in the college.

No, at this rank, you'll not get B.Sc Agriculture. For BHU 2018, your rank should be around 75.

Yes, surely you can apply for M.Sc in the desired subject in the University. Since your university is UGC approved, so it does not matter whether it is government or private .

Yes, you may get a seat in the further sessions of counselling. Don't loose hope and attend the counselling sessions. Look forward to the results. Best of luck.

Usually, the cut off is above 220, but you can get admission in the second or third round of counselling. So, attend the counselling and you will know the result. Since you have a good score you have fair chances for admission.