. A research team measured rates of photosynthesis of two plant species (Species K and Species J) as leaf temperature increased. These measurements were taken under ambient and high CO2 conditions. True or false regarding these results. • Species K utilizes C4 photosynthesis and Species J utilizes C3. For Species J, rates of photorespiration were higher at high CO2 conditions compare to low CO2 conditions. For Species J at Ambient CO2, rates of photorespiration were higher at 45°C than at

Biology: The Dynamic Science (MindTap Course List)
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Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
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Chapter54: Ecosystems And Global Change
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38. A research team measured rates of photosynthesis of two plant species (Species K and
Species J) as leaf temperature increased. These measurements were taken under ambient and
high CO2 conditions. True or false regarding these results.
• Species K utilizes C4 photosynthesis and Species J utilizes C3.
For Species J, rates of photorespiration were higher at high CO2 conditions compared
to low CO2 conditions.
For Species J at Ambient CO2, rates of photorespiration were higher at 45°C than at
25 °C.
(A) Ambient CO,
(B) High CO2
60
Species K
50
Species K
40
30
20
Species J
Species J
10
15 20 25 30 35 40 45 50
15 20 25 30 35 40 45 50
Leaf temperature ("C)
Net photosynthesis (umol m²²s")
Transcribed Image Text:38. A research team measured rates of photosynthesis of two plant species (Species K and Species J) as leaf temperature increased. These measurements were taken under ambient and high CO2 conditions. True or false regarding these results. • Species K utilizes C4 photosynthesis and Species J utilizes C3. For Species J, rates of photorespiration were higher at high CO2 conditions compared to low CO2 conditions. For Species J at Ambient CO2, rates of photorespiration were higher at 45°C than at 25 °C. (A) Ambient CO, (B) High CO2 60 Species K 50 Species K 40 30 20 Species J Species J 10 15 20 25 30 35 40 45 50 15 20 25 30 35 40 45 50 Leaf temperature ("C) Net photosynthesis (umol m²²s")
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