Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 37.2, Problem 1EQ
Summary Introduction
To determine: The current hypothesized mechanism by which auxin accumulation causes shoot bending in response to directional light.
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 behavior. Chemical signals which are transported within the body of a plant are known as plant hormones. Some of the examples of plant hormones are auxins, cytokinins, gibberellins, ethylene, abscisic acid, and brassinosteroids.
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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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- What are the pharmaceutical produts of seed plants and their biological activities?arrow_forwardThe oat coleoptiles of the seedlings above have been modified: either cut or placed in a light-blocking tube. Which ones will stills bend toward a directional light source?arrow_forwardIf the PIN2 gene is rendered non-functional by mutation it dramatically reduces the speed of the gravitropic response in the root. Explain what PIN proteins do and why the loss on PIN2 would likely affect the speed of the gravitropic response.arrow_forward
- How could auxin carriers be organized to allow auxin to move upward in roots?arrow_forwardThe summer is not optimal for grape growing and you're searching in your memory for something regarding plant hormones. Explain 2 ways you could utilize plant hormones (choose from auxin, ethylene, cytokinin, gibberellin, abscisic acid, salicylic acid, jasonic acid) to compensate for a problem during growing. For each way:arrow_forwardIs it true that in the gravitropic response of horizontal roots, high auxin concentration on the upper side impede growth while decreased auxin level on the lower side stimulates growth?arrow_forward
- Can you answer all the parts to this question please (a) What are the advantages of the self-incompatibility (SI) system in plants? Give at least three advantages. (b) What are the differences between gametophytic SI and sporophytic SI?arrow_forwardUsing the provided figure, describe the importance of the two phytochrome systems in controlling de-etiolation and green stem elongation under full sun and shade. Include the key mechanisms and temporal changes in control of this process.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_forward
- Under which of the following conditions would pollen from an S2S5 plant successfully pollinate an S1S5 flower? a. Using pollen from a carpelate flower to fertilize a staminate flower would be successful. b. If the plants used gametophytic self-incompatibility, half of the pollen would be successful. c. If the plants used sporophytic self-incompatibility, half of the pollen would be successful. d. Pollen from an S2S5 plant can never pollinate an S1S5 flower.arrow_forwardWhich of these is caused by the effects of auxin? (choose all that apply) 1.Maintaining apical dominance 2.suppressing lateral bud growth 3. stimulating root growth in stem leaf buds 4.stimulating root elongation 5. preventing seed germination 6.phototropismarrow_forwardIf auxin transport proteins were equally distributed at both ends of the cells, would polar auxin transport still be possible? Explain.arrow_forward
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