This quiz works best with JavaScript enabled. Home > Soil Science > Fundamentals Research > Fundamentals Of Soil Science – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 13 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Plants cannot grow without A) Rocks. B) Soil. C) Moss. D) Pesticides. Show Answer Correct Answer: B) Soil. 2. How do plants help prevent erosion? A) They dead leaves pile up to prevent erosion. B) Plants attract animals that build homes to prevent erosion. C) They don't. D) Plant roots help keep the soil in place to prevent erosion. Show Answer Correct Answer: D) Plant roots help keep the soil in place to prevent erosion. 3. Nutrients are lost from the soil when A) Products from plants are harvested. B) Animals are harvested. C) Animals are removed from the farm. D) All of the above. Show Answer Correct Answer: D) All of the above. 4. Organic matter is made of materials that ..... A) Were once living. B) Were once nonliving. C) Were once living and nonliving. D) None of above. Show Answer Correct Answer: A) Were once living. 5. What physical property of soil determines if it retains water? A) Color. B) Particle size. C) Texture. D) Weight. Show Answer Correct Answer: B) Particle size. 6. When you hear the word "potash", what element does it refer to? A) Phosphorus. B) Nitrogen. C) Potassium. D) Iron. Show Answer Correct Answer: C) Potassium. 7. This type of soil is made of tiny pieces of rock. A) Sand. B) Clay. C) Humus. D) Loam. Show Answer Correct Answer: A) Sand. 8. This is the unconsolidated material underlying the solum, relatively unaffected by the soil genetic processes. A) Horizon A. B) Horizon B. C) Horizon C. D) Horizon E. Show Answer Correct Answer: C) Horizon C. 9. Why is soil so important? A) Eaten by animals. B) Eaten by people. C) Keeps Earth clean. D) Provides food and support for plants. Show Answer Correct Answer: D) Provides food and support for plants. 10. In which soil type would water have difficulty draining? A) Sand. B) Silt. C) Clay. D) None of above. Show Answer Correct Answer: C) Clay. 11. Chemical weathering occurs at a greater rate in climates that are A) Cold and wet. B) Warm and wet. C) Hot and dry. D) Cold and dry. Show Answer Correct Answer: C) Hot and dry. 12. What is the topmost layer of the earths crust? A) Soil. B) Loam. C) Sand. D) Caly. Show Answer Correct Answer: A) Soil. 13. Which name starts with a lower case letter? A) Common Name. B) Genus. C) Species. D) None of above. Show Answer Correct Answer: C) Species. 14. In what type of climate is Chemical weathering more rapid? A) Wet. B) Hot. C) Both A & B. D) Neither A nor B. Show Answer Correct Answer: C) Both A & B. 15. Soil contains organic material. What is organic material? A) Anything that is alive. B) Anything that is dead and has never lived. C) Anything living or once living. D) Dirt. Show Answer Correct Answer: C) Anything living or once living. 16. The breaking down of rocks into smaller pieces. A) Erosion. B) Weathering. C) Sediment. D) Sand. Show Answer Correct Answer: B) Weathering. 17. There are three classes of rocks, identify which of the following did magma belongs? A) Sedimentary rocks. B) Igneous rocks. C) Metamorphic rocks. D) Intrusive rocks. Show Answer Correct Answer: B) Igneous rocks. 18. Where do the minerals (inorganic materials) that form soil come from? A) Plant and Trees. B) Weathering and Erosion of rocks. C) Climate and Air. D) Sunlight, Plants and Dirt. Show Answer Correct Answer: B) Weathering and Erosion of rocks. 19. A soil with bulk density of 1.30g/cm3 and a particle density of 2.60g/cm3 will have a porosity of ..... A) 5%. B) 25%. C) 50%. D) 75%. Show Answer Correct Answer: C) 50%. 20. Which of the following has led to an estimated 70 to 90 percent increase in food production according to the World Bank? A) Hydroponics. B) Sustainable agriculture. C) Fertilizer. D) Increased acreage. Show Answer Correct Answer: B) Sustainable agriculture. ← PreviousNext →Related QuizzesSoil Science 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 8Fundamentals Of Soil Science Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books