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