Basic Laboratory and Field Skills in Plant Biology and Allied Sciences — DU B.Sc. (Hons.) Botany Previous Year Question Papers

2. Attempt four questions in all. 5. Draw well-labelled diagrams wherever necessary Q1. (a) Expand the following (any five): (5x1=5) (b) Match the following: (5x1=5) (i) Centrifugation a) Systematics and Phylogeny (ii) Taxonomy b) Herbarium (iv) Osmium Tetroxide d) Separation (v) Mounting e) Presentation (c) Fill in the blanks (any five): (5x1=5) (i) Specialized filters named as ..are used in Confocal microscopy to remove out of focus light (ii) . is a spreadsheet program developed by Microsoft that organizes, calculates, and analyze data in a grid of rows and columns. (ill) 58.6 L equals to ..mL (iv) is the middle value in a dataset when the data is arranged in ascending or descending order (v) involves a stepwise reduction of microbial concentration using a constant dilution factor (Vi) • is defined as the number of moles of solute per Kg of solvent Q2. Differentiate between (nny five): (5x3 = 15) (i) Light and Electron Microscope (ii) Ocular and Stage Micrometer (iii) Herbarium and Museum (iv) MS-Word and MS-PowerPoint (V) Primary and Secondary data (vi) Stock and Standard solution Q3. Discuss the following (any three): (3 × 5=15) (i) Biosafety measures and their importance (ii) Fixatives used in plant biology (iii) Different culturing techniques used in microbiology (iv) Cataloguing and preservation of plant specimens Q4 Draw well-labelled diagrams of the following (any three): (3x5 = 15) (i) Laminar air flow (ii) Streak plate method (iii) Fire extinguishers (iv) Histogram and Pie chart Q5. Attempt the following questions (any two): (7.5 × 2 = 15) a) Discuss the process of data collection and analysis in biological research. (7.5) b) Define Beer-Lambert's law. Discuss the working principle and applications of c) Define Molarity, Molality, and Normality. Discuss various classes and handling of laboratory chemicals. (7.5)