there is entrance exam for bsc ug courses in mahatma ghandi university
If you are talking about the Mahatma Gandhi University, Kerala, then let me tell you that, mostly the admissions for undergraduate programs are conducted without any entrance test. This is done through centralised allotment process ( CAP ) adhering to the University norms.
Mostly entrance exam is conducted for PG and PhD courses.
Hope this helps.
Good luck!