MCQs Soil Science-51 Posted on May 10, 2025August 30, 2025Author agropublishers 0 1. What defines a soil series? Soils classified by climate Soils grouped by vegetation type Soils with highly variable profiles Soils with similar profile characteristics 2. Which of the following cellular components allows the selective movement of substances to enter and exit the cell? Vacuole Cell wall Endoplasmic reticulum Cell membrane 3. __________ is an essential component of both mica and clay minerals Silicon Sodium Iron Calcium 4. ____________ can vary within a soil phase Slope, erosion, and gravel content Soil color but not texture Only organic matter Only mineral content 5. The presence of alluvial deposits is primarily characteristic of ________ River valleys Ocean basins Glacial moraines Desert 6. __________ is a direct source of river water Volcanic eruptions Groundwater springs Ocean tides Residential sewer discharge 7. What evidence suggests that many layers of rock on Earth have been deformed? They form in horizontal layers but are now folded or tilted Earth’s size reduction over time caused rock deformation We can observe rock deformation in real-time during earthquakes Rocks on other planets show similar deformation 8. _______ is a soil particle that feels gritty and allows rapid water drainage Organic Matter Clay Silt Sand 9. Scientific evidence, based on the study of meteorites and moon rocks, indicates that Earth was formed approximately ___________ 4.6 million years ago 46,000 years ago 4.6 billion years ago 460,000 years ago 10. Glucose and fructose are examples of ___________ Nucleic acids Fats Carbohydrates Proteins Loading … Question 1 of 10
