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Author Question: After reading the paragraphs below, answer the questions that follow.Ethylene triggers the ripening ... (Read 44 times)

brutforce

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on: Jul 15, 2019
After reading the paragraphs below, answer the questions that follow.

Ethylene triggers the ripening of fruit for many plant species but does not seem to play an important role for the ripening of grapes. Scientists hypothesized that the trigger for the ripening of grape fruits is abscisic acid (ABA). They sprayed unripe Cabernet Sauvignon grapes with different concentrations of ABA and tracked several fruit characteristics over time: percent of fruits that are purple, concentration of anthocyanin (a purple pigment) per fruit, weight of each fruit, and total soluble solids per fruit as measured by °Brix. °Brix measurements indicate the amount of sugar in the fruit, and determine how much alcohol a wine will have. Higher values of each measurement indicate a greater degree of ripening. The scientists' results are shown in these four graphs.


Source: Wheeler, S., Loveys, B., Ford, C., & Davies, C. (2009). The relationship between the expression of abscisic acid biosynthesis genes, accumulation of abscisic acid and the promotion of Vitis vinifera L. berry ripening by abscisic acid. Australian Journal of Grape and Wine Research, 15(3), 195-204.


The visual indicator for grape ripening is the color of the fruit. Does adding ABA appear to speed up the ripening of grape fruit?
◦ No, because fruits in all the treatments were colored by the end of the experiment.
◦ No, because fruits in all the treatments have similar amounts of anthocyanin (purple pigment) by the end of the experiment.
◦ Yes, because there were always more colored fruits in both ABA treatments compared to the control.
◦ Yes, because fruits that were treated with ABA have more anthocyanin (purple pigment) earlier than the control.
Campbell Biology: Concepts & Connections ¦ Taylor, Simon, Dickey, Hogan, Reece ¦ 9th Edition
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Marked as best answer by brutforce on Jul 15, 2019

ecox1012

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Reply #1 on: Jul 15, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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brutforce

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Reply #2 on: Jul 15, 2019
Thank you!


ecox1012

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Reply #3 on: Jul 15, 2019
Always glad to help...


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