Magaia et al. illustrated in Figure 2 the relationship ofphotosyntheticof temperaturerate and respiration rate of C3 plants as a function(2015). Which process hampers the carbohydratesynthesis when the temperature exceeds 30°C?respirationphotosynthesis0 1040 5020 30temperature CFigure 2. Relationship of photosynthetic rate and respiration rate inresponse to temperature. Ⓒ Magaia et al., 2015O a. Light-dependent reactionO b. Light-independent reactionO c. PhotorespirationO d. Photolysis of waterrate

Answered: Magaia et al. illustrated in Figure 2…

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

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Question

Magaia et al. illustrated in Figure 2 the relationship of
photosynthetic
of temperature
rate and respiration rate of C3 plants as a function
(2015). Which process hampers the carbohydrate
synthesis when the temperature exceeds 30°C?
respiration
photosynthesis
0 10
40 50
20 30
temperature C
Figure 2. Relationship of photosynthetic rate and respiration rate in
response to temperature. Ⓒ Magaia et al., 2015
O a. Light-dependent reaction
O b. Light-independent reaction
O c. Photorespiration
O d. Photolysis of water
rate

Expert Solution

Step 1: Photorespiration

In the presence of light, photorespiration occurs when a plant consumes oxygen and releases carbon dioxide instead of fixing it during photosynthesis. Consequently, the amount of carbon that can be fixed during photosynthesis is reduced because no ATP is created, and carbon is inevitably lost.

Relationship of photosynthesis and temperature- Enzymes regulate the chemical processes involved in photosynthesis.
However, enzymes are denatured at high temperatures, which will slow down photosynthesis.

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