Life Member, Phycological Society (India), New Delhi.
Life Member, Indian Association of Environmental Management, NEERI, Nagpur.
Life Member, Indian Botanical Society, Meerut.
Life Member, Indian Science Congress Association, Calcutta.
Life Member, Asian Allelopathy Society, China
Life Member, National Academy of Sciences, Allahabad.
Life Member, Punjab Academy of Sciences, Patiala.
Life Member, Society of Environment Management and Bio-Research, Jagadri.
Life Member, Society of Environmental Scientists, Chandigarh
Life Member, Society of Plant Research, Bareilly.
Vice President, Panjab Academy of Sciences, 2013-2015
Member, Editorial Board, Annals of Biology for 1985-86
Member, Editorial Board, P. U. Research Journal (Science) since 2003.
Nominated Member, Executive Board of Phycological Society, India (1993-94)
Editor, Campus Reporter, Panjab University (Science Section) 2003-2005.
Chief Editor, Campus Reporter, Panjab University 2011-2013.
Co-Ordinator, North-India Chapter of Society of Green Vegetation Research, Calcutta 1997-2000.
Member, Board of Control in Botany, P.U. Chandigarh since 1998.
Convenor, UG and PG Board of Studies in Botany 2011-2014, PU, Chandigarh.
Convenor, Board of Studies in Environmental Studies 2010-2011, PU, Chandigarh
Member, UG Board of Studies, K. U. Kurukshetra, and Punjabi University, Patiala.
Member, Research Degree Committee, P.U. Chandigarh since 2000, GNDU, Amritsar 2012.
Member, Faculty of Science, P.U. Chandigarh since 2001.
Member, Academic Council, P.U. Chandigarh since 2001.
Executive Member, Indian Society of Phycology since 2006.
Chairman, Department of Botany, Panjab University, Chandigarh since November, 2011