Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 38, Problem 4TYU
Summary Introduction
Introduction: Plant hormones are chemical molecules produced by plants in extremely low concentration for regulating growth and development. There are five major hormones involved in the growth process. They are auxin, gibberellin, ethylene, abscisic acid, and cytokinin. Each of these hormones has their own functions at specific locations. The presence of these hormones in a definite amount is very essential for the normal growth and development of the plant.
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Students have asked these similar questions
1, Choose, Which part of the plant is not included in the shoot systems of plants?
a, stem
b, leaves
c, fruit
d, roots
2, Choose, Which of the following is not a plant hormone?
a, amylase
b, auxins
c, gibberellins
d, cytokinins
• On a commercial scale, enhancing the level of _______ (hormone) can help to speed up fruit ripening. • What measure do fruit producers take to slow down fruit ripening that is caused by natural ethylene?• What is a ‘triple response’. Which plant hormone initiates a triple response? • A change in the ratio of ethylene to auxin controls abscission. In the autumn, the amount of __________ decreases, rendering the cells of the abscission layer more sensitive to __________.
Auxin, like many substances, can be transported through the phloem; however, there is a second mechanism that exists just for auxin transport. What is it?
Chapter 38 Solutions
Biology (MindTap Course List)
Ch. 38.1 - Prob. 1LOCh. 38.1 - Prob. 1CCh. 38.1 - Prob. 2CCh. 38.2 - Prob. 2LOCh. 38.2 - Prob. 3LOCh. 38.2 - Prob. 4LOCh. 38.2 - Prob. 1CCh. 38.2 - Prob. 2CCh. 38.2 - Which hormones are involved in each of the...Ch. 38.3 - Explain how varying amounts of light and darkness...
Ch. 38.3 - Prob. 6LOCh. 38.3 - Prob. 7LOCh. 38.3 - Prob. 8LOCh. 38.3 - Prob. 1CCh. 38.3 - Prob. 2CCh. 38.3 - Prob. 3CCh. 38.4 - Prob. 9LOCh. 38.4 - Prob. 1CCh. 38 - Prob. 1TYUCh. 38 - Prob. 2TYUCh. 38 - Prob. 3TYUCh. 38 - Prob. 4TYUCh. 38 - The stress hormone that helps plants respond to...Ch. 38 - Prob. 6TYUCh. 38 - Prob. 7TYUCh. 38 - Pfr, the active state of _______________, forms...Ch. 38 - Prob. 9TYUCh. 38 - Which signaling molecule triggers the release of...Ch. 38 - Prob. 11TYUCh. 38 - PREDICT State whether flowering in a short-day...Ch. 38 - PREDICT If you transplanted the short-day plant...Ch. 38 - EVOLUTION LINK What adaptive advantages are...Ch. 38 - Prob. 15TYUCh. 38 - Prob. 16TYUCh. 38 - Prob. 17TYU
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- Some plant hormones oppose the effect of each other. Auxins and cytokinins for example. Whereas auxins prevent shoots from branching, cytokinins promote the development of branches. What other hormones also exhibit such opposing effects? Explain your answer briefly.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_forwardAn orchid plant is growing on the branch of mango tree.How do you describe this interaction between the orchid and the mango tree?arrow_forward
- What do you mean by auxin?arrow_forwardWhich of the following statements is false?a. Auxin and gibberellin promote stem elongation.b. Cytokinin triggers growth of lateral buds.c. Abscisic acid promotes water loss and dormancy.d. Ethylene promotes fruit ripening and abscissionarrow_forwardPlant Physiology Can a tropic response prevent another tropic response for a certain plant tissue or organ at the same time?arrow_forward
- When you look at a head of cabbage or lettuce, what are you seeing? Where is the stem? What about when you look at an onion? What are you seeing and where is the onion’s stem?arrow_forwardWhen you prune shrubs to make them “bushier”—that is, to prevent apical dominance—you are affecting the distribution and action of which plant hormone? (a) auxin (b) jasmonic acid (c) salicylic acid (d) ethylene (e) abscisic acidarrow_forwardLast Valentine's day, an 18-year old girl received a bouquet of flowers from the boy that she likes. She wanted to keep the cut flowers for a few more days so she asked for your advice on how she can retain the freshness of the flowers. Given this situation, what specific plant hormone would you recommend to her? a. abscisic acid b. auxin c. ethylene d. gibberellin e. cytokininarrow_forward
- Why did plant physiologists propose the existence of a mobile molecule(florigen) that triggers flowering?arrow_forwardWhich of the following is the role of iron in plants? A. endosperm development and dehydrogenase activity B. photodestruction of chlorophyll and chloroplast structure C. energy transferring process for photosynthesis and respiration D. regulatory component of proteins and metabolites in roots and leavesarrow_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_forward
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