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