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 29.2, Problem 1CC
Summary Introduction
To write:
The role of auxin carriers to allow auxin to move upward in roots.
Introduction:
Plant hormone auxin is produced in the stem, bud and root tips help to promote stem elongation, inhibits the growth of lateral buds. The chemical substance helps in regulating the action of certain cells.
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How could auxin carriers be organized to allow auxin to move upward in roots?
How does the signal transduction pathway for auxin that leads to cell wall loosening. Include the receptors ABP and ARF.
How does the auxin pathway possibly differ from the 'generic' signal transduction pathway? Consider expressing the cellular components that differ in the absence and presence of auxin.
If auxin transport proteins were equally distributed at both ends of the cells, would polar auxin transport still be possible? Explain.
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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- Is 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_forwardWhat is auxin’s role in phototropism?arrow_forwardAuxin, like many substances, can be transported through the phloem; however, there is a second mechanism that exists just for auxin transport. What is it?arrow_forward
- Plant cells communicate in a variety of ways to elicit cellular responses. In the figure below the plant is responding the presence of light with the release of auxin. Auxin was first discovered for its ability to promote growth in plants. It is a plant hormone that inhibits the lengthening and stimulate the formation of lateral roots and root hairs. a) Describe the plant’s response to the presence of light. (refer to picture)arrow_forwardThis is a picture of the initial experiments to figure out how auxin and phototropism worked. How do you expect the plant will grow in each scenario and why?arrow_forwardPlant cells communicate in a variety of ways to elicit cellular responses. In the figure below the plant is responding the presence of light with the release of auxin. Auxin was first discovered for its ability to promote growth in plants. It is a plant hormone that inhibits the lengthening and stimulate the formation of lateral roots and root hairs. (b) Explain the role that auxin has in eliciting the plant’s response.arrow_forward
- In plant physiology, What is leaf abscission and how is it controlled by the interaction between auxin and ethylene?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_forwardMany different treatments were possible in the phototropism experiment. Based on your understanding of phototropism, provide predictions about the direction of plant growth for the following two scenarios, and explain your reasoning. 1. The tip of the coleoptile is removed and lanolin with auxin is applied to the dark side of the stem. 2. The tip of the coleoptile is removed and lanolin with auxin is applied to the light side of the stem.arrow_forward
- If 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_forwardUsing purified auxin, how would you manipulate a bed of tulips to have stems that bend to the west? Place the auxin on the west side of the stem. Place the auxin on the east side of their stem. Place auxin in the soil on the west side of the plants. Water the plants with auxin.arrow_forwardWhy a flower is emascuated and auxin is applied to its stigma?arrow_forward
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