Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 37, Problem 13TYK
Summary Introduction
To review:
The reason for shoots of mutant plants lacking differentiated endodermis to respond to gravity normally.
Introduction:
The response of a plant toward the gravitational pull is called geotropism or gravitropism. Roots of plants respond positively toward the stimulus of gravitational pull. This means that the cells of the roots move toward the direction of gravity. The shoots of the plant, on the other hand, respond negatively to this stimulus. This means that the cells move in the opposite direction of gravity.
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Chapter 37 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 37.1 - Prob. 1SBCh. 37.1 - Prob. 2SBCh. 37.1 - Prob. 3SBCh. 37.2 - Prob. 1SBCh. 37.2 - Prob. 2SBCh. 37.2 - Prob. 3SBCh. 37.3 - Prob. 1SBCh. 37.3 - Prob. 2SBCh. 37.4 - Prob. 1SBCh. 37.4 - Prob. 2SB
Ch. 37.4 - Prob. 3SBCh. 37 - Prob. 1TYKCh. 37 - Which is the correct pairing of a plant hormone...Ch. 37 - Prob. 3TYKCh. 37 - Prob. 4TYKCh. 37 - Prob. 5TYKCh. 37 - Prob. 6TYKCh. 37 - Prob. 7TYKCh. 37 - Prob. 8TYKCh. 37 - Prob. 9TYKCh. 37 - Prob. 10TYKCh. 37 - Prob. 11TYKCh. 37 - Prob. 12TYKCh. 37 - Prob. 13TYKCh. 37 - Prob. 14TYKCh. 37 - Prob. 15TYKCh. 37 - Prob. 17TYKCh. 37 - Prob. 1ITDCh. 37 - Prob. 2ITDCh. 37 - Prob. 3ITD
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- Evolutionary biologists have coined the term exaptation to describe a common occurrence in the evolution of life. A plant organ originally has a particular function, however, fulfills a new one. Provide two examples of exaptation in plant organs and elaborate comprehensively.arrow_forwardAs plants grow, they tend to align theirstems and roots along the direction of the gravitational field. This tendency, which is related to differential concentrations of planthormones known as auxins, is referred to as gravitropism. As an illustration of gravitropism, experiments show that seedlings placed inpots on the rim of a rotating turntable do not grow in the verticaldirection. Do you expect their stems to tilt inward—toward the axisof rotation—or outward—away from the axis of rotation?arrow_forwardA typical plant body consists of basic organs such as roots, stems, and leaves. Over millions of years, these plant organs have become adapted for a variety of functions. Identify how each plant organ has been modified/adapted and indicate the function(s) thereof. This question can be done in table format.arrow_forward
- Design and describe an experiment using celery stalks to demonstrate how certain conditions will cause a loss or gain of turgor pressure. In order to follow the scientific method, your description should start with an observation and be followed by: a testable hypothesis, an outline of the experiment that will test the hypothesis, a description of the type of data that will be collected, and a possible conclusion that could likely be made after completing the experiment and analyzing the data.arrow_forwardWhich of the following statements about age gradients within the plant body is FALSE? Select one: a. Age gradients within the plant body include an apical-basal gradient where the youngest cells are near the apices (tips of shoots and roots). b. Age gradients within the plant body reflect the plant cells’ lack of mobility due to their shared walls. c. Phloem is oldest toward the outermost cell layers of the tree trunk and xylem is oldest toward the innermost cell layers of a tree trunk. d. All of the statements are true. e. Age gradients within the plant cells include walls that are youngest immediately adjacent to the plasma membrane and progressively older toward the middle lamella.arrow_forwardPlant Physiology Define or describe and give 2 functions of the plant tissue: Apical Meristemarrow_forward
- Which of the following statements about gravity perception is FALSE? A. Statoliths are specialized amyloplasts B. Statoliths are found in statocytes C. Gravity is sensed from the root cap acropetally through the zone of division D. Columella cells sense gravity through statolith pressure on the endoplasmic reticulum E. Auxin is the main hormone involved in gravity responsearrow_forwardPlease type the answer to all parts of this question Answer the following question about the Quiescent Center (QC) of the root meristem. (a) What is the QC of the root meristem? (b) How is QC identity established? (Describe the plant hormone(s) and genes that are involved in QC development)arrow_forwardIn vascular plants, one difference between root and shoot systems is that a. root systems cannot undergo secondary growth. b. root systems undergo secondary growth, but do not form bark. c. root systems contain pronounced zones of cell elongation, whereas shoot systems do not. d. root systems can store food reserves, whereas stem structures do not.arrow_forward
- An important difference between plant development and animal development is that______ . a. only plant development depends on hormones b. plants continue to develop throughout their lifetime c. animals, but not plants, have a circulatory systemarrow_forwardBriefly explain why research on the molecular mechanism of stomatalclosure might be of future use in agriculturearrow_forward) Both the caterpillar stage of the yucca moth and the ground sloth ate seeds of the yucca plant. However, when caterpillars eat, they completely digest the seed itself. When sloths ate the seeds, the seeds passed intact through the digestive system. How would you classify each of these interactions for the plant (positive or negative)? What do these interactions tell you about plant and animal interactions involving part of the plant being eaten?arrow_forward
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