Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Question
Chapter 31.3, Problem 1CC
Summary Introduction
To explain:
Why plants with mutant that produce excessive abscisic acid (ABA) are warmer than wild-types under normal, non-stressful circumstances.
Concept introduction:
ABA is a plant stress hormone that helps the plant to overcome drought conditions. It does so by helping in the closing of stomata. ABA causes water to flow out of guard cell and thus lessen its turgor. Hence, the stomata close.
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Many plants increase in freezing tolerance upon exposure to low nonfreezing
temperatures. Rye, for instance, is killed by freezing at about -5°C, but after a period
of exposure to low nonfreezing temperature can survive freezing down to about
-30°C. When exposed to low temperatures, plants exhibit an increased expression
of certain cold-induced genes that function to stabilize cell membranes against
freeze-induced injury. The ability of an individual plant to develop freezing tolerance
is best described as an example of:
O Acclimation
Allopatric speciation
O Mutation
Genetic drift
OAdaptation
Freeze-induced cellular dehydration
Many plants increase in freezing tolerance upon exposure to low nonfreezing
temperatures. Rye, for instance, is killed by freezing at about -5°C, but after a period
of exposure to low nonfreezing temperature can survive freezing down to about
-30°C. When exposed to low temperatures, plants exhibit an increased expression of
certain cold-induced genes that function to stabilize cell membranes against freeze-
induced injury. The ability of an individual plant to develop freezing tolerance is best
described as an example of:
Allopatric speciation
Freeze-induced cellular dehydration
Adaptation
Acclimation
O Mutation
Genetic drift
Chapter 31 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 31.1 - Prob. 1CCCh. 31.1 - WHAT IF? If a plant has the double mutation ctr...Ch. 31.1 - Prob. 3CCCh. 31.2 - If an enzyme in field-grown soybean leaves is most...Ch. 31.2 - WHAT IF? If a plant flowers in a controlled...Ch. 31.2 - MAKE CONNECTIONS Plants detect the quality of...Ch. 31.3 - Prob. 1CCCh. 31.3 - Prob. 2CCCh. 31.3 - Prob. 3CCCh. 31.4 - Prob. 1CC
Ch. 31.4 - Chewing insects mechanically damage plants and...Ch. 31.4 - Prob. 3CCCh. 31 - The hormone that helps plants respond to drought...Ch. 31 - Prob. 2TYUCh. 31 - Prob. 3TYUCh. 31 - Prob. 4TYUCh. 31 - Prob. 5TYUCh. 31 - Prob. 6TYUCh. 31 - DRAW IT Indicate the response of Arabidopsis to...Ch. 31 - Prob. 8TYUCh. 31 - FOCUS ON EVOLUTION As a general rule,...Ch. 31 - FOCUS ON INTERACTIONS In a short essay (100-150...Ch. 31 - Prob. 11TYU
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