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 8RQ
Which factors affect soil quality?
- chemical composition
- history of the soil
- presence of living organisms and topography cl. all of the above
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Which factors affect soil quality? a. chemical composition b. history of the soil c. presence of living organisms and topography d. all of the above
Which of the following is not a soil structure types?
Group of answer choices
True
False
a) Granular,
b) Crystalline
c) Angular blocky
d) Columnar/prismatic
e) Platy
The rate at which molecules diffuse through the soil depends on the soil’s:
Group of answer choices
a. water content
b. size and number of pores
c. kinds of molecule
d. temperature
e) All of the above
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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- A soil consists of layers called that taken together are called a ________. soil profiles : horizon horizons : soil profile horizons : humus humus : soil profilearrow_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
- Soil analysis is generally sufficient for analyzing:Group of answer choices a. pH b. Salinity c. Macro Nutrients d. Secondary Nutrients e. all of the abovearrow_forwardWhich 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.arrow_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_forward
- Analyze each statement (A and B) whether they are true or false. Use the choices below in answering each item; A statement A is true B statement B is true C both A and B are true D neither A nor B are true (A) Soil moisture is the most variable physical property of the soil. (B) Soil moisture involves all the water that is in the soil including potential water that might arise from various biogeochemical reactions in the soil.arrow_forwardWhat are the functions of soils in a rice field, and suggest management activities to maintain a healthy soil (a soil that can fully provide its full potential or function both to the plants and animals and the environment).arrow_forwardWhat 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_forward
- Which three soil colours would suggest the following conditions in the soil 1. Poor drainage 2. Reduced compounds of manganese 3. Well drained and aeration soilarrow_forwardWhich of the following statements about soil is true? (a) pore spaces are always filled with about 50% air and 50% water (b) a single teaspoon of fertile agricultural soil may contain up to several hundred living microorganisms(c) the texture of a soil is determined by the soil’s pH (d) a soil’s organic matter includes litter, droppings, and the dead remains of plants, animals, and microorganisms (e) soil formation is unaffected by a region’s climate or topographyarrow_forwardWhich soil horizon will contains the highest proportion of soil organismarrow_forward
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