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