Environmental Monitoring and Ecosystem Restoration — DU B.Sc. (Hons.) Botany Previous Year Question Papers

5. (a) Discuss how green spaces help in improving air quality. 8 1. (a) Give full forms of the following (any five): (b) Define any five of the following terms: (i) Erratic natural events (iv) Soil Health (v) Soil alkalinity (c) Fill in the blanks: (any five) 5x1=5 (i) .....leads to the removal of topsoil. (ii) Human-induced causes are called (iii) There are ... Development Goal:...... Sustainable (iv) . is a secondary pollutant formed in the a tester. (v) Legumes are associated with........for nitrogen fixation. (vi) .......... is the process where plants absorb contaminants from soil. 2. Differentiate Between following (any five): (i) Degradation by 'natural events' and 'anthropogenic causes' (ii) Degradation of Soil and Water (iii) Deforestation and Overgrazing (iv) Rehabilitation and Reclamation (v) Water Quality Indicators and Air Quality 3. Write short notes on any three of the follow-ing: 3×5=15 (i) Ecosystem degradation (il) Impact of forest fires on air quality (ili) Objectives of the UN Decade on Ecosystem (iv) Significance of AQI in environmental monitoring 4. (a) Explain the role of bioindicators in assessing environmental quality. 8 (b) Discuss the major factors responsible for loss of biodiversity.