Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 39 - Test Your Understanding - Level 2 - Application/Analysis - Page 869: 8

Answer

Please see the image.
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Work Step by Step

The key is to simply ask for each of the boxes: is the plant able to sense ethylene (first, third, fourth rows) and does it have too little (last column), too much (middle column) or a normal amount (first column) of ethylene. Triple response will occur if the seedling can sense ethylene and there is either extra ethylene present or control.
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