There is no entrance exam for admission. Admission is done by your merit marks. For admission in biotechnology, you must be passed 10+2 exam of any state board or central board with PCB and/or PCBM subject. The cutoff marks are different every year but one can get admission with 55-57% marks.
A student has to pass his 12th board exam to take the admission.
There is no entrance exam required for the admission.