Life Science (XL) is a code of GATE paper and not a science or engineering branch. Students applying for Life Science paper can apply for various M.Tech courses in all IITs and NITs.
Students pursuing B.Tech or B. E. in biotechnology or M.Sc. in Science related subjects can appear for the Life Science paper, as long as they match it with the entry criteria to the M.Tech specialization of their choice. The test has 2 compulsory parts in Chemistry and General Aptitude. Then the student has to choose 2 from the 5 optional subjects. The subjects are Botany, Zoology, Biochemistry, Microbiology and Food Technology.
Students who qualify in the GATE exam can apply to these colleges.