This quiz works best with JavaScript enabled. Home > Soil Science > Fundamentals Research > Fundamentals Of Soil Science – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 14 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Green manuring can improve levels of organic matter in the soil. This is when A) The type of crops grown in a paddock is changed regularly in a planned order. B) Fast-growing crops are grown and ploughed back into the soil before they seed. C) Part of a crop not harvested for sale can be returned to the soil. D) The soil is not cultivated, but seeds are sown directly into the soil. Show Answer Correct Answer: B) Fast-growing crops are grown and ploughed back into the soil before they seed. 2. The name below that NOT including rocks is ..... A) Granite. B) Marble. C) Baloon. D) Limestone. Show Answer Correct Answer: C) Baloon. 3. Soil is a loose mixture of: A) Organic materials. B) Organic and inorganic materials. C) Dead and decaying micro organisms. D) None of above. Show Answer Correct Answer: B) Organic and inorganic materials. 4. Horizon O is an organic horizon that comprises three sub-horizons. Which of the following did sapric (highly decomposed organic horizon) belongs? A) Oa. B) Oe. C) Oi. D) Ou. Show Answer Correct Answer: A) Oa. 5. Soil is composed of all of these natural materials EXCEPT A) Weathered rock. B) Plant matter. C) Plastic substances. D) Animal remains. Show Answer Correct Answer: C) Plastic substances. 6. Plants need the following except one A) Water. B) Air. C) Light. D) Pizza. Show Answer Correct Answer: D) Pizza. 7. Fossils are made from A) Plastic toys. B) Sedimentary rocks. C) Water. D) None of above. Show Answer Correct Answer: B) Sedimentary rocks. 8. In soil there is ..... of mineral content A) 25%. B) 5%. C) 45%. D) None of above. Show Answer Correct Answer: C) 45%. 9. The water holding capacity is the highest in - A) Sandy soil. B) Clayey soil. C) Loamy soil. D) None of above. Show Answer Correct Answer: B) Clayey soil. 10. SWBAT describe how scientists classify soil. A) They base them into climate, plants, and soil groups. B) They base them into different soil groups. C) They place them into soil composition and soil type. D) They place them by colors. Show Answer Correct Answer: A) They base them into climate, plants, and soil groups. 11. Which layer of soil helps in purification of water? A) Topsoil. B) Parent rock. C) Humus. D) Sub soil. Show Answer Correct Answer: D) Sub soil. 12. Which type of soil feels soft and airy? A) Sand. B) Loam. C) Clay. D) None of above. Show Answer Correct Answer: B) Loam. 13. Students poured 400 mL of water through a soil sample. They collected and measured the water that drained out of the soil. The water collected had a volume of 210 mL. How much water did the soil retain? A) 210mL. B) 190mL. C) 200mL. D) 210mL. Show Answer Correct Answer: B) 190mL. 14. Washing out a plastic ziploc bag and using it again is known as- A) Recycling plastic. B) Reusing an object. C) Reducing the amount of water used. D) Recycling glass. Show Answer Correct Answer: B) Reusing an object. 15. Which is NOT a layer of soil? A) Bedrock. B) Topsoil. C) Undersoil. D) Subsoil. Show Answer Correct Answer: C) Undersoil. 16. What is word fits w/ the organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals A) Subsoil. B) Humus. C) Loam. D) Decomposers. Show Answer Correct Answer: D) Decomposers. 17. The texture of soil depends on A) How much water it can retain. B) Particle size. C) Soil color. D) Soil mass. Show Answer Correct Answer: B) Particle size. 18. A substance is composed of organic material such as dead plants. To which category does the substance belong? A) Magma. B) Mineral. C) Ore. D) Soil. Show Answer Correct Answer: D) Soil. 19. Which soil can be compacted to higher density? A) Poorly graded sand. B) Well graded very gravelly SAND. C) Uniform silty soil. D) Clay of high plasticity. Show Answer Correct Answer: B) Well graded very gravelly SAND. 20. Layered rocks that are weathered by wind and water are called ..... A) Sedimentary rocks. B) Igneous rocks. C) Metamorphic rocks. D) Magma rocks. Show Answer Correct Answer: A) Sedimentary rocks. ← 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