Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Question
Chapter 35.3, Problem 2R
Summary Introduction
To review:
The enhancement of soil fertility through cation exchange process.
Introduction:
The earth’s uppermost layer that supports the growth of plants is called soil. The soil varies in composition from place to place in terms of the number and amount of nutrients present, water content, and the size of soil particles.
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(i)
What does high cation exchange capacity (CEC) mean in a particular soil and what are
the components in soil that determine the CEC level?
(ii)
Explain the processes of CEC in soil and provide examples of anionic minerals of
plants.
What are the effects of pH on plant growth rates?
Which element is responsible for causing soil salinity?At what concentration does the soil become saline?
Chapter 35 Solutions
Life: The Science of Biology
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- Would a soil high in clay but low in organic matter have a higher cation-exchange capacity than a soil low in clay and high in organic matter?arrow_forwardWhat is the concept of nutrient solution in plant physiology?arrow_forwardWhy fine textured soil hold more water as compared to coarse textured soils?arrow_forward
- What are the four components of the total water potential in a soil and what sign does each component have? What components of the total water potential most influence water flow in soil under unsaturated and saturated conditions?arrow_forwardWater absorption from the soil with the help of root hairs involves which types of forces?arrow_forwardWhat would likely happen to an herbaceous plant if the soil water content is below optimal range and there is increased ambient temperature?arrow_forward
- Describe nutrient exchanges in a soil. Relate and describe the Cation Exchange Capacity in a soil.arrow_forwardWhat creates the difference in concentration of ions between roots and soil?arrow_forwardDuring an experiment, a student covers all the stomata of a plant with nail polish, sealing them shut a)Predict how this would affect water transport b)How would this affect transport in the phloem?arrow_forward
- How does nutrient uptake by roots influence the soil pH near the root? What happens to the soil pH when a plant takes up ammonium vs. nitrate?arrow_forwardDescribe how roots absorb positively charged mineral ions by the process of cation exchange.arrow_forwardName and briefly explain the factors that affect soil formation.arrow_forward
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