MCQs Soil Science-51 Posted on May 10, 2025August 30, 2025Author agropublishers 0 1. __________ is a direct source of river water Ocean tides Groundwater springs Residential sewer discharge Volcanic eruptions 2. Glucose and fructose are examples of ___________ Carbohydrates Proteins Fats Nucleic acids 3. _______ is a soil particle that feels gritty and allows rapid water drainage Organic Matter Clay Silt Sand 4. 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 460,000 years ago 4.6 million years ago 5. Which of the following cellular components allows the selective movement of substances to enter and exit the cell? Cell membrane Cell wall Vacuole Endoplasmic reticulum 6. __________ is an essential component of both mica and clay minerals Calcium Sodium Iron Silicon 7. ____________ can vary within a soil phase Slope, erosion, and gravel content Only organic matter Only mineral content Soil color but not texture 8. What defines a soil series? Soils with highly variable profiles Soils grouped by vegetation type Soils with similar profile characteristics Soils classified by climate 9. 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 10. The presence of alluvial deposits is primarily characteristic of ________ Desert Ocean basins Glacial moraines River valleys Loading … Question 1 of 10
