Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 31, Problem 11RQ
What is the term used to describe the solid rock that lies beneath the soil?
- sand
- bedrock
- clay
- loam
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Students have asked these similar questions
Describe the three types of soil: Sand, Silt, and Clay
How can soil erosion lead to desertification?
It reduces the level of organic matter
It promotes flooding that destroys vegetation
It promotes salinization that destroys soil structure
Which of the following is not a factor that may lead to urban sprawl?
Pollution
Immigration
Overpopulation
Which statement is NOT true about soil salinization?
Soil dehydrates due to decrease in accumulation of water underground.
Starts by attempting to wash the salts out of the topsoil by pumping more water.
Results to the damage and killing of plants as saline water surrounds its deep roots.
Which would most likely happen if too much nutrient entered a freshwater ecosystem?
Algae will decrease, leaving few food resources, for fish.
Nutrients would sink to the bottom, increasing soil deposition.
Algae breakdown lowers dissolved oxygen, causing fish to suffocate.
RI
GİRTEN K
Which of the following is not true for Soil Organic Matter (SOM)?
O It can be degraded by microbes
OIt holds water for plants
It is integral to maintaining the soil structure
OIt makes up a large proportion of soil structure
OIt is important for retaining nutrients in the soil
Chapter 31 Solutions
Biology 2e
Ch. 31 - Figure 31.6 Soil compaction can result when soil...Ch. 31 - Figure 31.7 Which horizon is considered the...Ch. 31 - Figure 31.10 Farmers often rotate corn (a cereal...Ch. 31 - For an element to be regarded as essential, all of...Ch. 31 - The nutrient that is part of carbohydrates,...Ch. 31 - Most ____ are necessary for enzyme function....Ch. 31 - What is the main water source for land plants?...Ch. 31 - Which factors affect soil quality? chemical...Ch. 31 - Soil particles that are 0.1 to 2 mm in diameter...Ch. 31 - A soil consists of layers called that taken...
Ch. 31 - What is the term used to describe the solid rock...Ch. 31 - Which process produces an inorganic compound that...Ch. 31 - Through mycorrhization, a plant obtains important...Ch. 31 - What term describes a plant that requires...Ch. 31 - What is the term for the symbiotic association...Ch. 31 - What type of plant problems result from nitrogen...Ch. 31 - Research the life of Jan Babtista van Helmont What...Ch. 31 - List two essential macronutrients and two...Ch. 31 - Describe the main differences between a mineral...Ch. 31 - Name and briefly explain the factors that affect...Ch. 31 - Describe how topography influences the...Ch. 31 - Why is biological nitrogen fixation an...Ch. 31 - What is the main difference, from an energy point...Ch. 31 - Why is a root nodule a nutritional adaptation of a...
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- Write T on the blank provided if the statement is correct. If it is false, underline and replace the word(s) with the word(s) that will make the statement true. Calcium carbonate is highly soluble in water in which calcium element is easily release to correct soil pH. The degree of fineness of lime is not dependent to the speed of checking soil acidity. Carbon is released back to the atmosphere during decomposition of organic materials. Mineralization of nitrogen decreases if the water filled pore space is below 50%. Soil carbon mineralization increases as the moisture content of the soil increases to a certain level and may drop if soil is fully saturated with water. Nitrifying bacteria that obtain carbon from carbon dioxide prefer reduced zone to nitrify nitrogen to available form.arrow_forwardWould the particle density of a soil high in organic matter be the same? Higher or Lower? Why?arrow_forwardA soil consists of layers called that taken together are called a ________. soil profiles : horizon horizons : soil profile horizons : humus humus : soil profilearrow_forward
- Figure 31.7 Which horizon is considered the topsoil, and which is considered the subsoil?arrow_forwardFigure 31.6 Soil compaction can result when soil is compressed by heavy machinery or even foot traffic. How might this compaction change the soil composition?arrow_forwardDescribe the process of soil formation for one of the following: Tundra soil, Tropical forest soil or Prairie/grassland soil. The answer should address the impact of vegetation accumulation, impact of temperature and precipitation on the formation. You should also note the soil characteristics and reasons for them in relation to your choice.arrow_forward
- Soil particles may be held together by which of the following to form aggregates? Group of answer choices a) Humus b) Clay c) Iron Oxides d) All of the above e. None of the abovearrow_forward48. is a light and porous soil that tends also to accumulate ..... organic matter. O Aerosolic dust O Loess O Volcanic ash O Dune sandarrow_forwardAn extremely acid soil generally limits the availability of many nutrients in the soil. True or Falsearrow_forward
- Describe in brief the characteristics of clay and loam soils. Provide ONE (1) example of plant that is suitable for each type of soil. *arrow_forwardSoil could be deficient in any of the following nutrients. If you had to supply one of these to the soil, which would be required in the smallest amount? Potassium Sulfur Phosphorus Nitrogen Ironarrow_forwardAs a rule of thumb, each 1% of soil organic matter by weight contains about 1,000 pounds of nitrogen in the plow layer. For a plow layer with 2% soil organic matter, one can expect the amount of N to be mineralized per growing season to equal about: over 120 pounds less than 10 pounds 15 pounds 120 pounds 40 poundsarrow_forward
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