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