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 10RQ
A soil consists of layers called that taken together are called a ________.
- soil profiles : horizon
- horizons : soil profile
- horizons : humus
- humus : soil profile
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Students have asked these similar questions
Which of the following is not a soil structure types?
Group of answer choices
True
False
a) Granular,
b) Crystalline
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A soil consists of layers called ________ that taken together are called a ________. a. soil profiles : horizon b. horizons : soil profile c. horizons : humus d. humus : soil profile
Which of the following statements is NOT as description of soil?
A. Varying nutritional content.
B. Phototropic microbes are found only on the top few centimeters.
C. A homogenous layer of organic and inorganic material.
D. The area around the plant soil usually has the highest microbial populations.
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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- Which factors affect soil quality? chemical composition history of the soil presence of living organisms and topography cl. all of the abovearrow_forwardFigure 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_forward
- When the soil is acidic, plants cannot grow on it. True or Falsearrow_forwardSoil 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_forwardWhich soil horizon will contains the highest proportion of soil organismarrow_forward
- What size of soil particles is best for agriculture? What advantages does this size of particles have? What is the type of soil with the size of particles called? (Hint: The name is not in the chapter you will have to check outside sources)arrow_forwardWhich factors affect soil quality? a. chemical composition b. history of the soil c. presence of living organisms and topography d. all of the abovearrow_forwardSoil particles are arranged in order of increasing size are A. sand, silt and clayB. silt, sand and clayC.clay, sand and siltD.clay, silt and sandarrow_forward
- An extremely acid soil generally limits the availability of many nutrients in the soil. True or Falsearrow_forwardWhich of these determines the Potential Evapotranspiration of an area? (select all that are correct) Question 1 options: Precipitation/Rainfall None of these Soil type Relative Humidty Temperaturearrow_forwardWe have 2 types of soils. One soil has bulk density of 2.75g/cm^3; second has bulk density of 1.5g/cm^3. What guess will we get from this information about the following soil properties for both soils? a. Soil structure b. Porosity c. Root penetration d. Presence of organic matterarrow_forward
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