Graduate aptitude test in Engineering is conducted each year by each of the participating 7 IITs (i.e IIT Delhi, Bombay, Kanpur, Chennai, Guwahati, Kharagpur & Roorkee) or IISc, Bangalore on behalf of the National Coordinating Board- GATE, Department of Education, Ministry of Human Resources Development (MHRD), Government of India. GATE BT was first introduced as a GATE subject from the year 2010 only. Every year 11000-18000 students appear for the GATE BT exam where the technical and applied aspects of biology are the key focus. However, GATE BT has lesser foot fall as compared to GATE XL. All GATE exam are conducted by an online computer based test (CBT).