Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 29.4, Problem 1CC
Summary Introduction
To write:
The environmental signal that roots use to achieve downward growth.
Introduction:
The root has a complex system whose main function is to anchor the plant to the soil and help in absorbing nutrients and water from the soil. The development of root is in coordination with the shoot system, which is influenced by the environmental conditions prevailing. Auxin is an important plant hormone that plays a pivotal role while working in coordination with water and nutrient supplies.
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Chapter 29 Solutions
Principles of Biology
Ch. 29.1 - Prob. 1BCCh. 29.1 - Prob. 1TYKCh. 29.2 - Prob. 1CCCh. 29.2 - Prob. 2CCCh. 29.2 - Prob. 1TYKCh. 29.2 - Prob. 2TYKCh. 29.3 - What kind of light does the active conformation of...Ch. 29.3 - Prob. 2CCCh. 29.3 - Imagine a garden that has been planted with...Ch. 29.3 - Prob. 3CC
Ch. 29.4 - Prob. 1CCCh. 29.4 - Prob. 1TYKCh. 29.5 - Prob. 1CCCh. 29.5 - In what way is systemic acquired resistance to...Ch. 29.5 - Prob. 1TYKCh. 29 - Prob. 1TYCh. 29 - Prob. 2TYCh. 29 - Prob. 3TYCh. 29 - Prob. 4TYCh. 29 - Prob. 5TYCh. 29 - Photoreceptor molecules allow plant cells to...Ch. 29 - Prob. 7TYCh. 29 - Prob. 8TYCh. 29 - Prob. 1CCQCh. 29 - Prob. 2CCQCh. 29 - Prob. 3CCQCh. 29 - Prob. 1CBQCh. 29 - How could you increase the resistance of a...
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- If the excised cotyledon were incubated for a longer period, would you expect more roots to form? Why?arrow_forwardDo you think root exudates inhibit AMF growth?arrow_forwardThe cross-section of a woody root is shown in Figure 3. Observe and locate the center of the root and work to the outer portion. Identify and label the following: Secondary phloem Secondary xylem Primary xylem Vascular cambium Xylem rayarrow_forward
- In comparison with stems, roots secondary xylem exhibits..... 1. wider vessels 2. primary xylem outside of the secondary xylem 3. greater lignification 4. more derived parenchyma cells 5. less amount of parenchymaarrow_forwardWhat is the time required for water to reach the uppermost leaf on a wilted stem with no cut?arrow_forwardContractile roots usually are combined with such shoot modification as A. Bulb B. Tuber C. Rhizome D. Tendril E. Stolenarrow_forward
- Newly-formed root cells begin to form different cell types in the ________. a. zone of elongation b. zone of maturation c. root meristem d. zone of cell divisionarrow_forwardWhy does a layer of periderm offer only temporary protection? When the plant makes a new layer of cork cambium, does it make the new layer to the outer side of the failing periderm or to the inner side of it, deeper in thesecondary phloem?arrow_forwardCan the direction of phloem transport change? Does phloem ever transport material into a leaf?arrow_forward
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