Department of Biochemistry Sri Venkateswara College, University of Delhi, New Delhi, India;
Department of Botany, Deshbandhu College, University of Delhi, New Delhi, India;
Department of Botany, Sri Venkateswara College, University of Delhi, New Delhi, India;
Department of Botany, Uni- versity of Delhi, New Delhi, India.;
Department of Chemistry, Sri Venkates- wara College, University of Delhi, New Delhi, India;
Ozone; Depletion; Ultra-Violet; Radiation; Chlorofluorocarbons; Plants; Ecosystem;