This quiz works best with JavaScript enabled. Home > Soil Science > Fundamentals Research > Fundamentals Of Soil Science – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 30 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. After heavy rain, the percent water remaining in soil 2 to 3 days after filled up and after free drainage has practically ceased. A) Field capacity. B) Hydroscopic coefficient. C) Saturation point. D) Permanent wilting point. Show Answer Correct Answer: A) Field capacity. 2. Soil is a mixture of ..... A) Air, minerals and water. B) Living and non-living things. C) Sand, silt, clay and nutrients. D) All of the above. Show Answer Correct Answer: D) All of the above. 3. What is the relationship between particle size and permeability? A) As particle size increases, the permeability decreases. B) As particle size increases, the permeability increases. C) As permeability decreases, the particle size decreases. D) As permeability increases, the particle size remains constant. Show Answer Correct Answer: B) As particle size increases, the permeability increases. 4. To break down or decay living things is called: A) Plant matter. B) Weathering. C) Decompose. D) Trees. Show Answer Correct Answer: C) Decompose. 5. What consists of clay and other particles washed down from the A horizon, but little humus A) Humus. B) Subsoil. C) Bedrock. D) Loam. Show Answer Correct Answer: B) Subsoil. 6. Farm effluent is the waste from dairy factories, dairy sheds and piggeries and includes dung, urine and udder wash. A) It adds nutrients to the soil. B) It adds organic matter to the soil. C) It adds water to the soil. D) All of the above. Show Answer Correct Answer: D) All of the above. 7. Which type of soil is a mixture of the other types of soil? A) Sand. B) Loam. C) Silt. D) Clay. Show Answer Correct Answer: B) Loam. 8. Name the particles that is smallest in size A) Silt. B) Sand. C) Gravel. D) Clay. Show Answer Correct Answer: D) Clay. 9. What is a material found on the surface of the earth consisting of rock, sand, clay, dead plants, and animal remains? A) Silt. B) Soil. C) Bedrock. D) Loam. Show Answer Correct Answer: B) Soil. 10. Which one of these soil holds water A) Organic. B) Sand. C) Clay. D) None of above. Show Answer Correct Answer: C) Clay. 11. Which of the following best describes soil erosion? A) The breakdown of soil. B) The improvement of soil. C) The addition of soil. D) The movement of soil by wind or water. Show Answer Correct Answer: D) The movement of soil by wind or water. 12. What makes up the scientific name of an organism? A) Kingdom and Phylum. B) Family and Genus. C) Genus and Species. D) None of above. Show Answer Correct Answer: C) Genus and Species. 13. Humus is formed from rotting ..... A) Clay and soil. B) Animal and plants. C) Wood and rocks. D) None of above. Show Answer Correct Answer: B) Animal and plants. 14. The organic matter in humus is made of A) Dead worms. B) Stems. C) Roots. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. Many plants cannot grow in sandy soil. Why is this true? A) Sandy soil does not hold enough water. B) Air cannot pass through sandy soil. C) Roots cannot easily push through sandy soil. D) Sandy soil has too many nutrients. Show Answer Correct Answer: A) Sandy soil does not hold enough water. 16. Soil profile refers to an arrangement within a soil of - A) Its horizontal layout. B) Vertical layout. C) Size of soil particles. D) None of above. Show Answer Correct Answer: B) Vertical layout. 17. What process breaks down bedrock to begin soil formation? A) Leaching. B) Weathering. C) Decomposition. D) Humus. Show Answer Correct Answer: B) Weathering. 18. An example of an angiosperm is A) Pine tree. B) Sunflower. C) Moss. D) Fern. Show Answer Correct Answer: B) Sunflower. 19. What is the layer under the Humus that provides support and nutrients to plants? A) Humus. B) Bedrock. C) Topsoil. D) Subsoil. Show Answer Correct Answer: C) Topsoil. 20. Often phrased as an "If, Then" statement, this is an educated guess for a solution to a scientific problem. A) Solution. B) Hypothesis. C) Answer. D) Fact. Show Answer Correct Answer: B) Hypothesis. ← 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