Bio 121 Campbell Biology Truman College
Bio 121 Campbell Biology Truman College
17th Edition
ISBN: 9781323670637
Author: Urry, Cain
Publisher: PEARSON
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Chapter 37.3, Problem 1CC
Summary Introduction

To explain: Why a study of the rhizosphere is needed to understand plant nutrition.

Concept introduction: The rhizosphere is a region around the plant roots which contains a number of bacteria with which the root systems form a mutualism that is beneficial. These bacteria depend upon the plant’s sugars, proteins, and sloughed off cells as their primary source of food. In return, the bacteria help to create a nutrient-rich and more aerated place for the roots of the plants.

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explain the importance of mycorrhizae and nitrogen-fixing bacteria in plant nutrition?
Sudents are asked to pair a plant structure to its physiological function and give evidence for why that structure is important for the process they describe Anne: The root hairs are used to pull in sugars available in the soil that give the plant energy for growth and reproduction. Jamil: The phloem is needed for cellular respiration as it transports the carbon dioxide to the leaves in order to perform cellular respiration. Shantal: The cambium is important for phossynthesis because it allows water into the plant which is needed as a reactant for photosynthesis. Enrique The guard cells are needed during transpiration because they open and close to regulate the gases that enter and leave the plant. Which student correctly described a plant structure and its physiological function? O Anne Jamil O Shantal O Enrique
Why is the study of the rhizosphere critical to understandingplant nutrition?
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