Hai This is Biology Den. It is absolutely free to get more info on Biology. Just surf and gain good knowledge on Biology field. All Biology related model papers are available from here like CSIR-UGC-NET, GATE-XL-Life Science, AUCET, SVCET, IISC intro to previous papers. More Study materials are added to this site, which is useful for all students and lecturers. these are prepared by following the Andhra University syllabus.