Chapter 1. Chapter 4: Photosynthetic Pigments

Introduction

Graphic Content Activities

Use the data presented in the graph to answer each question in this exercise.

Question

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4
Right! A line graph uses lines or curves to connect data points or illustrate trends across many data points.
No. Try again!

Question

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4
Right! As indicated in the graph title and legend, plants produce various photosynthetic pigments that absorb and reflect specific wavelengths of light. Good job!
Incorrect.

Question

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4
Exactly! Energy absorption, the dependent variable, is represented on the y-axis.
Incorrect.

Question

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4
Correct. Since moving up the y-axis indicates energy absorption, moving down the y-axis on the graph must represent reflection of light energy. Good job!
Incorrect.

Question

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{"title":"Chlorophyll a","description":"Good job!","type":"correct","color":"#339966","code":"[{\"shape\":\"rect\",\"coords\":\"238,103,339,122\"}]"} {"title":"Chlorophyll b","description":"No, study the graph, and try again.","type":"incorrect","color":"#00ff00","code":"[{\"shape\":\"rect\",\"coords\":\"238,126,337,144\"}]"} {"title":"Carotenoids","description":"No, study the graph, and try again.","type":"incorrect","color":"#ff6600","code":"[{\"shape\":\"rect\",\"coords\":\"239,148,338,164\"}]"}
3
Chlorophyll a is most effective at absorbing wavelengths of about 700 nm. Good job!
Incorrect.

Question

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{"title":"Chlorophyll a","description":"No, chlorophyll a does not have the greatest absorption. Please study the graph again.","type":"incorrect","color":"#339966","code":"[{\"shape\":\"rect\",\"coords\":\"237,105,333,123\"}]"} {"title":"Chlorophyll b","description":"Good job!","type":"correct","color":"#00ff00","code":"[{\"shape\":\"rect\",\"coords\":\"238,126,332,144\"}]"} {"title":"Carotenoids","description":"No carotenoids do not absorb the most energy. Check the graph again.","type":"incorrect","color":"#ff6600","code":"[{\"shape\":\"rect\",\"coords\":\"239,147,334,163\"}]"}
3
Right! Chlorophyll b has the greatest energy absorption rate, particularly when absorbing wavelengths of light around 450-475 nm.
Incorrect.

Question

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4
Exactly! The color of a pigment results from the light it reflects.
Incorrect.

Question

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4
Right. As the graph shows, the photosynthetic pigments reflect light at wavelengths of about 550-600 nm. Therefore, if a plant were only exposed to wavelengths of about 550-600 nm, the plant most likely would be unable to absorb enough light energy to conduct photosynthesis, and probably would die.
Try again.

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