This quiz works best with JavaScript enabled. Home > Agriculture > Soil Science > Fundamentals Research > Fundamentals Of Soil Science – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 2 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Plants and animals become part of soil when they A) Grow and Develop. B) Produce offspring. C) Grow and Develop. D) Die and Decay. Show Answer Correct Answer: D) Die and Decay. 2. Soil formation begins with weathering of: A) Bedrocks. B) Rocks. C) Humus. D) None of above. Show Answer Correct Answer: B) Rocks. 3. In which phase does the cell replicate its DNA? A) Gap 1 phase. B) M phase. C) Gap 2. D) Synthesis phase. Show Answer Correct Answer: D) Synthesis phase. 4. What type of erosion is slowed down by contour plowing and terracing? A) Wind. B) Water. C) Air. D) None of above. Show Answer Correct Answer: B) Water. 5. Bulk density is an indication of soil porosity and soil texture. A) False. B) Probably false. C) True. D) Probably true. Show Answer Correct Answer: A) False. 6. What is "relief" and how does it affect soil formation? A) Topography influences sunlight hours, water runoff, temp, erosion, and organic matterbuildup. B) Relief is a type of soil the mixes with others. C) Relief is something that builds up. D) Influence Sunlight. Show Answer Correct Answer: A) Topography influences sunlight hours, water runoff, temp, erosion, and organic matterbuildup. 7. Gardeners will sometimes add lime to soils that are too acidic. Lime acts as a fertilizer and raises the pH of the soil to an appropriate level.What soil pH most likely requires the application of lime? A) 11. B) 4. C) 7. D) 9. Show Answer Correct Answer: B) 4. 8. Humus is made up of what materials? A) Small bits of shells and bones. B) Decomposing plants and animals. C) Quartz and feldspar minerals. D) Silt and clay. Show Answer Correct Answer: B) Decomposing plants and animals. 9. Which two states in the Midwest Region are soybeans primarily grown? A) Indiana and Minnesota. B) Iowa and Illinois. C) Kansas and Iowa. D) Ohio and Michigan. Show Answer Correct Answer: B) Iowa and Illinois. 10. What is one way a person can help to conserve or save energy? A) Cut off lights when they exit a room. B) Drive a big car with no passengers. C) Ask to get driven to school. D) Brush teeth with hot water. Show Answer Correct Answer: A) Cut off lights when they exit a room. 11. Which is a factor that affects soil development? A) Time. B) Slope. C) Type of rock. D) All of the above. Show Answer Correct Answer: D) All of the above. 12. Which of the following is not an example of mechanical weathering A) Reaction with carbonic acid. B) Animal action. C) Freezing and thawing. D) Plant action. Show Answer Correct Answer: A) Reaction with carbonic acid. 13. Which type of soil has the smallest particles? A) Loam. B) Clay. C) Silt. D) Sand. Show Answer Correct Answer: B) Clay. 14. What two things determine the property of the soil created? A) The particle weight and climate. B) The particle size and type of parent material. C) The particles biota and topography. D) The particle color and shape. Show Answer Correct Answer: B) The particle size and type of parent material. 15. Why is soil important to us? A) It takes a very long time to produce. B) We use it for our crops and other food sources. C) It is finite (limited). D) All of the above. Show Answer Correct Answer: D) All of the above. 16. Which of the following best describes how soils are formed? A) As plants and animals break down, the carbon in their bodies turns into minerals that plants eat to survive. B) Over thousands of years, rocks are weathered down to small particles that mix with small amounts of decaying organic matter and living organisms. C) As animals consume plants, they convert the plant matter into minerals. The feces from the animals then forms the soil. D) Over thousands of years, carbon dioxide in the air converts into minerals that fall to the ground and form soil. Show Answer Correct Answer: B) Over thousands of years, rocks are weathered down to small particles that mix with small amounts of decaying organic matter and living organisms. 17. Which soil is the best for growing plants? A) Sand. B) Loam. C) Silt. D) Clay. Show Answer Correct Answer: B) Loam. 18. Properties of soil consist of ..... A) Location, size, shape, color. B) Size, shape, color. C) Texture, color, how well it holds water, and particle size, ability to support plant growth. D) How well it holds water, shape, ability to support plant growth. Show Answer Correct Answer: C) Texture, color, how well it holds water, and particle size, ability to support plant growth. 19. Which cell structure has a double membrane surrounding it? A) Chloroplasts. B) Golgi apparatus. C) Cytoplasm. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 20. This is termed used for a true soil or A and B horizons. A) Solum. B) Liholith. C) Regolith. D) Saprolite. Show Answer Correct Answer: A) Solum. 21. The strength of a ped is called its A) Structure. B) Structure type. C) Structure grade. D) Structure class. Show Answer Correct Answer: C) Structure grade. 22. The rotting dead matter in the soil is called- A) Humus. B) Gravel. C) Sand. D) None of above. Show Answer Correct Answer: A) Humus. 23. Summer season when mang Kanor planted his cucumber plant. a few weeks after, his plants begin to wilt and later the plants die. What type of soil moisture coefficients happened in the field? A) Hydroscopic coefficient. B) Permanent wilting point. C) Saturation point. D) Field capacity. Show Answer Correct Answer: B) Permanent wilting point. 24. What percent of a U.S. landfill is made up of food scraps and yard clippings? A) 11%. B) 18%. C) 5%. D) 25%. Show Answer Correct Answer: D) 25%. 25. What is true about Humus? A) Dark and soft. B) Contains much of what plants need for growth. C) The more humus a soil has, the better plants will grow!. D) All the previous. Show Answer Correct Answer: D) All the previous. 26. In soil the air present comes from ..... A) The atmosphere. B) Respiration of soil organisms. C) The atmosphere and from respiration of soil organisms. D) Water. Show Answer Correct Answer: C) The atmosphere and from respiration of soil organisms. 27. Soil formation begins with the weathering of A) The A horizon. B) Bedrock. C) Humus. D) Litter. Show Answer Correct Answer: B) Bedrock. 28. Eolian soils are moved by ..... A) Glaciers. B) Wind. C) Water. D) Gravity. Show Answer Correct Answer: B) Wind. 29. Decaying living things in topsoil makes it? A) Moist. B) Sandy. C) Clay like. D) A dark color. Show Answer Correct Answer: D) A dark color. 30. Which layer is a the layer below soil that is made up of large rock? A) Parent Material. B) Bedrock. C) Humus. D) Topsoil. Show Answer Correct Answer: B) Bedrock. ← PreviousNext →Related QuizzesSoil Science QuizzesAgriculture QuizzesFundamentals Of Soil Science Quiz 1Fundamentals 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