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Based on the graph below, what can you infer? Absorption and Action Spectra Absorbance / Photosynthetic Rate 400 500 S 600 700

Based on the graph below, what can you infer? Absorption and Action Spectra Absorbance / Photosynthetic Rate 400 500 S 600 700

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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## Analyze the Absorption and Action Spectra ### Based on the graph below, what can you infer? ### Absorption and Action Spectra The graph displayed shows the relationship between the absorption of light by photosynthetic pigments and the photosynthetic rate. The x-axis represents the wavelength of light (in nanometers), ranging from 400 nm to 700 nm, covering the spectrum from violet to red light. The y-axis represents both the absorbance and the photosynthetic rate. #### Description of the Graph: - **Wavelength Range (X-axis)**: 400 nm (violet) to 700 nm (red) - **Absorbance / Photosynthetic Rate (Y-axis)**: The higher the curve, the greater the absorption or photosynthetic activity. - **Curves and Peaks**: - Multiple curves are depicted, likely representing different pigments such as chlorophyll a, chlorophyll b, and carotenoids. - Peaks in the blue region (around 450 nm) and red region (around 680 nm) indicate high absorption and possibly high photosynthetic activity. - Low absorption in the green region (around 500-550 nm) suggests that less light is absorbed in this range. ### Multiple-Choice Question: #### What can you infer from the graph? - **Option A**: Photosynthesis is most active between 400-475 nm. That is why plants are green. - **Option B**: Photosynthesis is most active between 450-550 nm. That is why plants are green. - **Option C**: Photosynthesis is most active between 600-700 nm. That is why plants are green. - **Option D**: Both A and C are correct. - **Option E**: There is not enough evidence in the graph to infer any of the above. ### Analysis: To choose the correct answer, consider the following: - High peaks in the blue (around 450 nm) and red (around 680 nm) regions indicate high absorptive capacity and photosynthetic activity. - Low absorption in the green region (around 500-550 nm) implies that green light is least effective for photosynthesis. - Plants appear green because green light is reflected rather than absorbed. ### Select the Most Accurate Option: Reflect on the information provided by the graph to make an informed choice.
Transcribed Image Text:## Analyze the Absorption and Action Spectra ### Based on the graph below, what can you infer? ### Absorption and Action Spectra The graph displayed shows the relationship between the absorption of light by photosynthetic pigments and the photosynthetic rate. The x-axis represents the wavelength of light (in nanometers), ranging from 400 nm to 700 nm, covering the spectrum from violet to red light. The y-axis represents both the absorbance and the photosynthetic rate. #### Description of the Graph: - **Wavelength Range (X-axis)**: 400 nm (violet) to 700 nm (red) - **Absorbance / Photosynthetic Rate (Y-axis)**: The higher the curve, the greater the absorption or photosynthetic activity. - **Curves and Peaks**: - Multiple curves are depicted, likely representing different pigments such as chlorophyll a, chlorophyll b, and carotenoids. - Peaks in the blue region (around 450 nm) and red region (around 680 nm) indicate high absorption and possibly high photosynthetic activity. - Low absorption in the green region (around 500-550 nm) suggests that less light is absorbed in this range. ### Multiple-Choice Question: #### What can you infer from the graph? - **Option A**: Photosynthesis is most active between 400-475 nm. That is why plants are green. - **Option B**: Photosynthesis is most active between 450-550 nm. That is why plants are green. - **Option C**: Photosynthesis is most active between 600-700 nm. That is why plants are green. - **Option D**: Both A and C are correct. - **Option E**: There is not enough evidence in the graph to infer any of the above. ### Analysis: To choose the correct answer, consider the following: - High peaks in the blue (around 450 nm) and red (around 680 nm) regions indicate high absorptive capacity and photosynthetic activity. - Low absorption in the green region (around 500-550 nm) implies that green light is least effective for photosynthesis. - Plants appear green because green light is reflected rather than absorbed. ### Select the Most Accurate Option: Reflect on the information provided by the graph to make an informed choice.
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