BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 37, Problem 2U
Summary Introduction
Introduction:
The soil is formed by the weathering of rocks. It is present in the form of different layers on the surface of the crust of the Earth. The soil consists of sand, silt, clay, minerals, organic matter, humus and air in the pore space.
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Soil pH affects availability of nutrients for root absorption. The following statements are true except*
a. Low pH results in an increase in Aluminum toxicity.
b. Low pH results to unavailability of major nutrient elements.
c. Toxic metals are more available in acidic soil.
d. Low pH results in slow activity of soil-inhabiting microorganisms.
The high acidity of the soil means less capacity to bind positively charged ions.
True or False?
State the colony shape, margin, and elevation of the nutrient agar colony exposed in :
A. Nutrient agar in Soil
B. Nutrient agar in Water
C. Nutrient agar in Plant leaves
D. Nutrient agar in Air
Chapter 37 Solutions
BIOLOGY
Ch. 37.1 - Prob. 1LOCh. 37.1 - Prob. 2LOCh. 37.1 - Prob. 3LOCh. 37.2 - Prob. 1LOCh. 37.2 - Prob. 2LOCh. 37.2 - Describe the goal of food fortification research.Ch. 37.3 - Prob. 1LOCh. 37.3 - Prob. 2LOCh. 37.3 - Prob. 3LOCh. 37.4 - Prob. 1LO
Ch. 37.4 - Explain the main effect on herbivores of a higher...Ch. 37.4 - Prob. 3LOCh. 37.5 - Prob. 1LOCh. 37.5 - Prob. 2LOCh. 37.5 - Prob. 3LOCh. 37 - Prob. 1IQCh. 37 - Prob. 2IQCh. 37 - Which of the following is NOT found in topsoil? a....Ch. 37 - Prob. 2UCh. 37 - What proportion of the soil volume is occupied by...Ch. 37 - Which of the following is a micronutrient? a....Ch. 37 - Prob. 5UCh. 37 - Prob. 6UCh. 37 - a C4 plant, the Calvin cycle occurs in a. the...Ch. 37 - One potential problem with using poplars to remove...Ch. 37 - Prob. 1ACh. 37 - If you wanted to conduct an experiment to...Ch. 37 - Which of the following would decrease nitrogen...Ch. 37 - Which of the following might you do to increase...Ch. 37 - Prob. 5ACh. 37 - Prob. 1SCh. 37 - Describe an experiment to determine the amount of...Ch. 37 - Prob. 3S
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Select the following characteristics that clay soils possess. I. Poor aeration. II. Poor drainage. III. Soil not compacted. IV. Good water retention. V. Mineral content is low. A. II, V. B. I, II, IV. C. III, IV, V. D. I, II, III, IV.arrow_forwardCamellia and azalea are plants that produce yellow leaves, which is considered an undesirable outcome, when they are grown on alkaline soil. Which of the statements below support the fact about camellia and azalea stated above? a. Loam soil is not advisable to be used in growing camellia and azalea because of its acidity. b. Camellia and azalea should not be planted in chalk soil. c. Camellia and azalea produced yellow leaves because they are planted in acidic soil. d. Camellia and azalea require chalk soil to counter the effect of the alkaline soil used.arrow_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_forward
- Available Nutrients occur in the soil generally in the form of:Group of answer choices A.) Ions (cations and anions) B.) Organic complexes C.) Molecular structures D.) Simple sugars.arrow_forwardName the following as soil forming processes: a. Soil erosion b. Formation of humus c. Weathering of sand d. Nutrients absorbed by plant roots e. deposition of organic matter f. Leaching of water along with dissolved ionsarrow_forwardWhen mineral nutrients are applied to the soil, which of the following may occur?Group of answer choices a. Taken in by the plant b. Leached below the root zone c. Tied up to colloids in the soil d) All of the abovearrow_forward
- 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 abovearrow_forwardWhich of the following is not an element of soil sustainability? a. Green manures b. Plowing C. Mulching d. Mixed farming e. Contour plowing Which of the following is not a phenolic a. Flavones b. Anthocyanins С. Coumarins d. Rubber e. Taninsarrow_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
- 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_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_forwardList any five specific processes of soil formationarrow_forward
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