Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 36.2, Problem 2R
Summary Introduction
To review:
The reason for bending of coleoptile in the direction of light despite auxin moving away from the side of coleoptile that is receiving light.
Introduction:
Light is essential for the plants to survive as their photosynthesis depends on it. Plants growing in shade are often seen bending toward the light. This phenomenon of bending of plant in response to the amount of light it receives is called as phototropism.
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Chapter 36 Solutions
Life: The Science of Biology
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- Match the following using the choices. Note: Select the right choice by clicking the arrow and select. This plant growth regulator is important in the maintenance of the apical Choo hook for seedling emergence. This plant growth regulator is involved in the action to make the plants Choo tall. This plant growth regulator is produced primarily in the roots and ChooV transported in the xylem. The seed coats of some desert plants contain high levels of this plant growth regulator to prevent germination Choo This plant growth regulator induces the differentiation of shoots in tissue culture Choo This plant growth regulator causes the differentiation of vascular tissue from parenchyma Choo This plant growth regulator is antagonist to the action of gibberellin. Choo This plant growth regulator interacts with auxin in the regulation of the cell morphogenessis Choo This plant growth regulator causes stomatal closure and increases root Choo to shoot ratio Treating a plant with this plant growth…arrow_forwardPlant growth... hormones only have very specific, limited functions is centrally regulated by the plant nervous system only involves hormones made at the site of action can vary in response to environmental conditions all of the abovearrow_forwardSpraying a plant with which of the following will increase axillary bud growth? Strigolactone Ethylene Cytokinin Auxinarrow_forward
- The 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_forwardHow 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.arrow_forwardIf auxin transport proteins were equally distributed at both ends of the cells, would polar auxin transport still be possible? Explain.arrow_forward
- Elaborate helps provided by the following materials/compounds in plant defense. (i) Phenolic compounds (ii) Trichomes (iii) Cutinarrow_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. a) Describe the plant’s response to the presence of light. (refer to picture)arrow_forwardwhy some starch synthesis mutants have a reduced gravitropic response in the root and the shoot. explainarrow_forward
- Interactions between auxin, gibberellins and cytokinin.arrow_forwardPhytochrome, plays an important role in flowering in many plants. It can also be used to determine when lettuce seeds germinate (shown in the figure below What is phytochrome likely doing in the lettuce seeds? Activating abscisic acid production Activating inhibitors of germination Inhibiting gibberellin synthesis Turning on germination-related genesarrow_forwardPhytochrome is a plant pigment protein that mediates plant infection promotes plant growth mediates morphological changes in response to red and far-red light inhibits plant growtharrow_forward
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