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