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Plants and Society, 4/e
Dr. Estelle Levetin, University of Tulsa
Karen McMahon, University of Tulsa

Plant Physiology

Multiple Choice Quiz



1

1. The rate of transpiration and photosynthesis is controlled by ________.
A)a. guard cells
B)b. epidermal cells
C)c. root cells
D)d. mesophyll cells
E)e. none of the above
2

2. Plants that have morphological and anatomical adaptations to reduce transpiration rates are common in ________.
A)a. mesophytes
B)b. xerophytes
C)c. hydrophytes
D)d. all of angiosperms
E)e. none of the above
3

3. In the Transpiration-Cohesion Theory, cohesion refers to the ability of water molecules to bond to vessel element cell walls.
A)True
B)False
4

4. What is the force driving the bulk flow of water in xylem?
A)a. photosynthesis
B)b. cellular respiration
C)c. adhesion
D)d. transpiration
E)e. absorption
5

5. Which of the following is NOT a sink?
A)a. roots
B)b. developing fruit
C)c. apical meristem
D)d. developing bud
E)e. none of the above
6

6. Hyperaccumulators are currently used
A)a. to remove zinc from contaminated soil.
B)b. to restore contaminated waterways.
C)c. in phytoremediation.
D)d. to remove selenium salts in contaminated soils
E)e. in all of the above.
7

7. The conversion of radiant energy into chemical energy during photosynthesis is an example of the First Law of Thermodynamics.
A)True
B)False
8

8. Corn and sugarcane are the two major sucrose-supplying crops in the world, and both played an important role in introducing the slave trade to North America.
A)True
B)False
9

9. When a phosphate group is added to an ADP molecule to form ATP, it is said to be _________.
A)a. phosphorylated
B)b. catalyzed
C)c. oxidized
D)d. converted
E)e. all of the above
10

10. The electromagnetic spectrum consists of visible light, microwaves, radiowaves, X rays, and ultraviolet light.
A)True
B)False
11

11. What color in the absorption spectrum do chlorophyll a and b absorb most?
A)a. red and blue-violet
B)b. green and red
C)c. yellow
D)d. green and blue
E)e. green only
12

12. NADPH, oxygen, and ATP are products of the light reaction.
A)True
B)False
13

13. Which of the following is NOT an electron carrier of the light reaction?
A)a. plastocyanin
B)b. acetyl-CoA
C)c. plastoquinone
D)d. cytochrome complex
E)e. ferredoxin
14

14. RUBISCO is the enzyme responsible for decarboxylation of CO2 from the pyruvate molecule during the Krebs Cycle.
A)True
B)False
15

15. Which photosynthetic cycle is found in many desert plants?
A)a. Krebs Cycle
B)b. C4
C)c. CAM
D)d. glycolysis
E)e. none of the above
16

16. Which is the correct sequence of events in cellular respiration?
A)a. Electron Transport System, Krebs Cycle, Glycolysis
B)b. Calvin Cycle, Krebs Cycle, Electron Transport System
C)c. Glycolysis, Krebs Cycle, Electron Transport System
D)d. Glycolysis, Calvin Cycle, Electron Transport System
E)e. Krebs Cycle, Glycolysis, Electron Transport System
17

17. During which cellular respiration reaction is citrate formed?
A)a. Electron Transport System
B)b. Glycolysis
C)c. Krebs Cycle
D)d. Calvin Cycle
E)e. None of the above
18

18. Cytochromes are iron-containing coenzymes embedded in the inner membranes of the mitochondria.
A)True
B)False
19

19. Irrespective of the end products, both aerobic and anaerobic respiration processes are initiated by glycolysis.
A)True
B)False
20

20. Alcoholic fermentation yields 10 ATP molecules during glycolysis, whereas aerobic respiration yields 3 ATP molecules.
A)True
B)False