This quiz works best with JavaScript enabled. Home > Agriculture > Soil Science > Fundamentals Research > Fundamentals Of Soil Science – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 17 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What effect do plans roots have on a rock? A) They hold it together. B) They made it turn to sand. C) They cause it to undergo chemical changes. D) They break it apart. Show Answer Correct Answer: D) They break it apart. 2. Three kinds of soil are A) Sandy, loam, clay. B) Gravel, humus, sand. C) Loam, silt, humus. D) Clay, gravel, silt. Show Answer Correct Answer: A) Sandy, loam, clay. 3. A single layer of soil is called a ..... A) Row. B) Profile. C) Horizon. D) Column. Show Answer Correct Answer: C) Horizon. 4. Which grain is grown in Mississippi? A) Maize. B) Milo. C) Wheat. D) Rice. Show Answer Correct Answer: D) Rice. 5. What is the solid mass of rock below soil called? A) Parent material. B) Organic. C) Bedrock. D) Subsoil. Show Answer Correct Answer: C) Bedrock. 6. What emerges from the seed and pushes into the soil? A) Cotyledons. B) Embryo. C) Endosperm. D) Radicle. Show Answer Correct Answer: D) Radicle. 7. The most important property for plan growth is the ability of the soil to ..... water A) Particles. B) Retain. C) Drain. D) Smell. Show Answer Correct Answer: B) Retain. 8. Which soil hold too much water and does not allow air in it? A) Sand. B) Loam. C) Clay. D) None of above. Show Answer Correct Answer: C) Clay. 9. In which layer of soil does the underground water gets collected? A) Parentrock. B) Bedrock. C) Childrock. D) Subsoil. Show Answer Correct Answer: A) Parentrock. 10. Which of the following describes how well soil can grow plants? A) Soil structure. B) Soil arrangement. C) Soil fertility. D) Soil texture. Show Answer Correct Answer: C) Soil fertility. 11. Which soil will allow the water to pass through easily. A) Clay. B) Sand. C) Silt. D) None of above. Show Answer Correct Answer: B) Sand. 12. The practice of planting different things each year, in order to maintain the nutrients in the soil of a field. A) Crop managing. B) Soil conservation. C) Soil rotation. D) Crop rotation. Show Answer Correct Answer: D) Crop rotation. 13. Most gray soil contains silt. Sandy soil is usually light brown. Many dark soils contain dead plants and animals. Which color of soil most likely contains humus? A) White. B) Gray. C) Light brown. D) Dark brown. Show Answer Correct Answer: D) Dark brown. 14. Plants get the light it needs from: A) Rain. B) Sun. C) Soil. D) Clean air and carbon dioxide. Show Answer Correct Answer: B) Sun. 15. The bottom layer of soil is called ..... A) Topsoil. B) Subsoil. C) Bedrock. D) None of above. Show Answer Correct Answer: C) Bedrock. 16. What soil is a mixture of sand, silt, and clay? A) Silt. B) Loam. C) Clay. D) Soil. Show Answer Correct Answer: B) Loam. 17. As surface area of a rock increases, the rate of weathering ..... A) Decreases. B) Increases. C) Stays Constant. D) None of above. Show Answer Correct Answer: B) Increases. 18. What layer is considered the 'B' layer of soil? A) Topsoil. B) Parent material. C) Subsoil. D) Organic. Show Answer Correct Answer: C) Subsoil. 19. What do we call dirt A) Soil. B) Water. C) Air. D) Ice. Show Answer Correct Answer: A) Soil. 20. All of the following are plant remains EXCEPT A) Dead leaves. B) Sand Particles. C) Seed covers. D) Dried twigs. Show Answer Correct Answer: B) Sand Particles. 21. Vertical section through the soil showing different layers is called A) Types of soil. B) Soil texture. C) Soil profile. D) None of the above. Show Answer Correct Answer: C) Soil profile. 22. Compaction is defined as ..... A) The mechanical process to increase soil density, to increase void and reduce permeability. B) The mechanical process to increase soil density, to reduce void and reduce permeability. C) The mechanical process to decrease soil density, to reduce void and reduce permeability. D) The mechanical process to decrease soil density, to increase void and reduce permeability. Show Answer Correct Answer: B) The mechanical process to increase soil density, to reduce void and reduce permeability. 23. Which of the following is NOT a property of soil? A) Texture. B) Color. C) Where it's located. D) Ability to retain water. Show Answer Correct Answer: C) Where it's located. 24. How many layers does a typical soil profile contain? A) 100 layers. B) 15 Layers. C) 5 Layers. D) 4 Layer. Show Answer Correct Answer: D) 4 Layer. 25. Several students investigate the characteristics of soil. The students observe samples of common soils. In one sample they observe that water drains through the soil easily. When they rub the soil between their fingers, it feels rough and scratchy, and its particles feel hard. The soil the students observed is most likely - A) Clay. B) Silt. C) Loam. D) Sand. Show Answer Correct Answer: D) Sand. 26. The very top layer of soil is mostly made of A) Solid rock. B) Clay and mineral deposits. C) A mixture of minerals and organic material. D) Mostly organic material (humus). Show Answer Correct Answer: D) Mostly organic material (humus). 27. Glacial till is the soil deposited by ..... A) Glaciers. B) Wind. C) Gravity. D) Water. Show Answer Correct Answer: A) Glaciers. 28. A rock containing iron is soft, crumbly, reddish in color. It's been chemically weathered by ..... A) Nitrogen. B) Oxygen. C) Carbon Dioxide. D) Sulfer. Show Answer Correct Answer: B) Oxygen. 29. Which soil would retain the most water? A) Loam. B) Sand. C) Silt. D) Clay. Show Answer Correct Answer: D) Clay. 30. Soil is formed when ..... are broken down by weather, water and living things over long periods of time. A) Rocks. B) Animals. C) Trees. D) Insects. Show Answer Correct Answer: A) Rocks. ← PreviousNext →Related QuizzesSoil Science QuizzesAgriculture QuizzesFundamentals Of Soil Science Quiz 1Fundamentals Of Soil Science Quiz 2Fundamentals Of Soil Science Quiz 3Fundamentals Of Soil Science Quiz 4Fundamentals Of Soil Science Quiz 5Fundamentals Of Soil Science Quiz 6Fundamentals Of Soil Science Quiz 7Fundamentals Of Soil Science Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books