He became Doctor of Science after finishing Lucknow University. He has done research in on Plants.
T.C.N. Singh was a specialist in Physiology and Ecology. He was a professor and Head of Botany Department at Annamalai University. He wrote many articlesw and research papers.
He was a member of Indian Science Congress Association, International Society of Plant Morphologists, Bihar Academy of Agricultural Sciences, Association of Scientific Workers of India.