This quiz works best with JavaScript enabled. Home > Agriculture > Soil Science > Fundamentals Research > Fundamentals Of Soil Science – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 12 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In alternate leaf patterns, how many leaves are produced at each node? A) Three. B) One. C) Zero. D) Two. Show Answer Correct Answer: B) One. 2. How we can prevent erosion? A) Build retaining walls. B) Plant grass and shrubs. C) Improve drainage. D) All of the above. Show Answer Correct Answer: D) All of the above. 3. ..... soil is infertile. A) Subsoil. B) Substratum. C) Topsoil. D) All of the above. Show Answer Correct Answer: B) Substratum. 4. What is not a benefit of adding lime? A) Less acidic soil encourages soil organisms. B) Lime can flocculate clay particles, making pores larger. C) Adds calcium. D) Lowers the pH. Show Answer Correct Answer: D) Lowers the pH. 5. What is a dark-colored substance that forms as plant and animal remains decay A) Soil horizon. B) Loam. C) Bedrocl. D) Humus. Show Answer Correct Answer: D) Humus. 6. How does soil help in supporting life on Earth? A) It filters the water. B) It helps recycle nutrients like carbon and nitrogen. C) Many plants grow in the soil. D) All of the above. Show Answer Correct Answer: D) All of the above. 7. What does retain mean? A) To hold in. B) To let fall out. C) To decompose. D) To dissolve. Show Answer Correct Answer: A) To hold in. 8. What is Humus made up of? A) Decompose. B) Decayed animal and plant parts. C) Decayed soil. D) None of above. Show Answer Correct Answer: B) Decayed animal and plant parts. 9. Soil is formed by A) Freezing. B) Weathering. C) Heating. D) Cooling. Show Answer Correct Answer: B) Weathering. 10. Which of the following shows where soil formation happens at a faster rate? A) Cold dry climate. B) Steep slopes. C) Valleys and flat areas. D) None of above. Show Answer Correct Answer: C) Valleys and flat areas. 11. Which of the following shows that soil erosion is happening? A) The soil is deep and grows grass on top. B) Pavement is placed on the soil for a road. C) A forest of pine trees grows in the soil. D) The soil has deep gullies. Show Answer Correct Answer: D) The soil has deep gullies. 12. What does humus contain? A) Sand. B) Glass. C) Clay. D) Decayed plants and animals. Show Answer Correct Answer: D) Decayed plants and animals. 13. The removal of land surface by water, wind or ice is known as - A) Erosion. B) Retention. C) Percolation. D) None of above. Show Answer Correct Answer: A) Erosion. 14. Soil profile is a vertical section of the soil showing its horizons. Arrange the following according to the correct sequence of a Master horizons? A) O, A, B, E, C. B) A, B, C, E, O. C) O, A, E, B, C. D) O, A, B, C, E. Show Answer Correct Answer: C) O, A, E, B, C. 15. This refers to a type of water that can escape from the soil. A) Gravitational. B) Flowing. C) Hygroscopic. D) Capillary. Show Answer Correct Answer: A) Gravitational. 16. Sedimentary rocks are formed from the weathering of rocks exposed at the earth surface. The process involved the following EXCEPT. A) Cementation. B) Transportation. C) Fragmentation. D) Transformation. Show Answer Correct Answer: D) Transformation. 17. Which land class is hardest to farm? A) Class 8. B) Class 5. C) Class 2. D) Class 1. Show Answer Correct Answer: A) Class 8. 18. The topmost layer of land which is composed of grainy substance is called ..... . A) Weathered Rock. B) Bedrock. C) Soil. D) All of the above. Show Answer Correct Answer: C) Soil. 19. Mang Kanor is a farmer, he produces many types of vegetable crops in his garden. What type of approach did Mang Kanor belongs? A) Edopological approach. B) Pedalogical approach. C) Edapological approach. D) Pedological approach. Show Answer Correct Answer: C) Edapological approach. 20. The rock and mineral fragments in soil come from rock that has been A) Blasted. B) Carved. C) Weathered. D) Chemically treated. Show Answer Correct Answer: C) Weathered. 21. Factors that affect soil formation A) Climate. B) Slope. C) Vegetation. D) All of the above. Show Answer Correct Answer: D) All of the above. 22. Mechanical Weathering breaks down rocks through ..... A) Chemical Reactions. B) Magic. C) Erosion. D) Force. Show Answer Correct Answer: D) Force. 23. Breaking down of rocks by the action of wind and climate is called- A) Weathering. B) Cultivating. C) Percolation. D) None of above. Show Answer Correct Answer: A) Weathering. 24. Identify the right matcha. Sand i. smaller than sand, larger than clayb. silt ii. large particlesc. clay iii. smallest particles A) A - ii, b - i, c - iii. B) A - ii, b - iii, c - i. C) Both are correct. D) None of the above. Show Answer Correct Answer: A) A - ii, b - i, c - iii. 25. The average time estimate it takes for mature soils to develop A) 8-10 months. B) 5-10 years. C) 50 years. D) Thousands of years. Show Answer Correct Answer: D) Thousands of years. 26. Which of the following is NOT an organic material A) Decayed animals. B) Rocks. C) Decayed plants. D) Worms. Show Answer Correct Answer: B) Rocks. 27. In which state is corn often grown for silage? A) Pennsylvania. B) Vermont. C) New Hampshire. D) New York. Show Answer Correct Answer: B) Vermont. 28. Why does a soil that has only sand and gravel not support plant growth well? A) It holds in too little water. B) It holds in too much water. C) It has too many decomposers. D) It has too many minerals. Show Answer Correct Answer: A) It holds in too little water. 29. What is the total economic value of crops grown in the Western region? A) $ 52 billion. B) $ 28 billion. C) $ 41 billion. D) $ 37 billion. Show Answer Correct Answer: C) $ 41 billion. 30. Plant evaluation is part of which industry? A) Textile. B) Mechanics. C) Agricultural. D) Media. Show Answer Correct Answer: C) Agricultural. ← 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