Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 37.3, Problem 3CC
Summary Introduction
To determine: The environmental signal used by roots to achieve downward growth.
Introduction: An organism’s response to an external or an internal stimulus is known as its behavior. Plant movement is one of the examples of plant behaviour. Chemical signals which are transported within the body of a plant are known as plant hormones and these assist the plant in responding to the external stimuli. Gravitropism and phototropism are two types of plant movement in which the plant responds to the external sources of light.
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Chapter 37 Solutions
Biology
Ch. 37.1 - Prob. 1CSCh. 37.2 - Prob. 1CCCh. 37.2 - Prob. 1EQCh. 37.2 - Prob. 2EQCh. 37.2 - Prob. 2CCCh. 37.2 - Prob. 3CCCh. 37.3 - Prob. 1CCCh. 37.3 - What would happen if you gave flowering plants a...Ch. 37.3 - Prob. 3CCCh. 37.3 - Prob. 4CC
Ch. 37 - Prob. 1TYCh. 37 - Prob. 2TYCh. 37 - Prob. 3TYCh. 37 - Prob. 4TYCh. 37 - Prob. 5TYCh. 37 - Prob. 6TYCh. 37 - Thigmotropism is a plant response to a. light. b....Ch. 37 - Which response is an adaptation to flooding? a....Ch. 37 - Prob. 9TYCh. 37 - Prob. 10TYCh. 37 - Prob. 1CQCh. 37 - Why do plants produce so many types of resistance...Ch. 37 - Prob. 3CQCh. 37 - Prob. 1COQCh. 37 - Prob. 2COQ
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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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