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

Plant Physiology

Concept Quiz



1

Xerophytes are plants that are able to grow in arid environments.
Explain how the following adaptations of xerophytes would reduce transpiration rates and enhance these plants’ survival in arid regions:
Thick cuticle
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2

Xerophytes are plants that are able to grow in arid environments.
Explain how the following adaptations of xerophytes would reduce transpiration rates and enhance these plants’ survival in arid regions:
Sunken stomata (stomata are found in cavities)
Need a Hint?
3

Xerophytes are plants that are able to grow in arid environments.
Explain how the following adaptations of xerophytes would reduce transpiration rates and enhance these plants’ survival in arid regions:
Leaf surface covered with dense mat of trichomes (hairs)
Need a Hint?
4

Photosynthesis consists of two major phases: the light reactions, in which light energy is converted into chemical energy, and the Calvin Cycle, in which the fixation and reduction of carbon dioxide to form sugars take place.

How is each phase dependent upon the other?