Soil Science I

Daffodil International University Department of Agricultural Science Faculty of Agriculture Sciences B.Sc. in Agricultural Science Midterm Examination-Fall 2026 Course Code: 0813-2103 Course Title: Soil Science-I (Introductory Soil Science) Level and Term: L2, T1 Section: 253 (A, B & C) Course Teacher Initials: IHJ & DMI Time: 1 Hour 30 Minutes Total Marks: 25 Splitting any answer is strictly prohibited 1. a) Define soil and soil science. (PLO1, CLO1, C1) 2 b) Enlist the major components of soil and briefly describe the components. (PLO1, CLO1, C4) 3 2. a) Classify sedimentary rocks on the basis of nature of chief agents of transportation. (PLO1, CLO1, C2) 2 b) Illustrate the rock cycle with a neat, labelled schematic diagram. (PLO1, CLO1, C2) 3 3. a) Define soil temperature with its importance. (PLO1, CLO2, C1) 2 b) Write briefly the factors affecting soil temperature. (PLO2, CLO2, C3) 3 4. a) Enlist the name of 12 textural classes of soil. (PLO1, CLO2, C1) 2 b) Illustrate genesis of soil structure with significance. (PLO4, CLO2, C3) 3 5. a) Develop a concept that shows the differences between particle and bulk density. (PLO1, CLO2, C4) 2 b) "P.D. = 2B.D. when porosity value is 50%" - explain with its importance. (PLO2, CLO2, C3) 3