Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 39, Problem 7TYK
Summary Introduction
Introduction: Photosynthesis occurs during daytime in most of the plants, whereas the respiration process occurs throughout the day. Photosynthesis is an example of a plant’s response toward the light. The other two responses toward light are phototropism and photoperiodism.
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Which of the following statements about phototropism is/are not true?
A. Red light is the most effective light wavelength for positive phototropism of plants.
B. Higher auxin concentration on the lighted side causes that side to elongate more than the non illuminated side.
C. Phototropins are the only effective light receptors in phototropism.
D. Phototropism decreases the plant's ability to enhance photosynthetic capacity.
E. All of the above
F. None of the above
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Stems and roots, respectively, exhibit
a. a positive phototropic response and no phototropic response.
b. a negative phototropic response and no phototropic response.
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d. no phototropic response and a negative phototropic response.
Chapter 39 Solutions
Study Guide for Campbell Biology
Ch. 39 - Prob. 1IQCh. 39 - What are the important steps in the transduction...Ch. 39 - What is the plans growth response? What types of...Ch. 39 - Explain how phytochrome can also indicate the...Ch. 39 - What are free-running periods?Ch. 39 - Indicate whether a short-day plant and a long-day...Ch. 39 - Prob. 7IQCh. 39 - Prob. 8IQCh. 39 - Prob. 9IQCh. 39 - Prob. 1SYK
Ch. 39 - Develop a concept map to illustrate your...Ch. 39 - Prob. 3SYKCh. 39 - Prob. 1TYKTCh. 39 - Prob. 2TYKTCh. 39 - Prob. 3TYKTCh. 39 - Prob. 4TYKTCh. 39 - Prob. 5TYKTCh. 39 - Prob. 6TYKTCh. 39 - Prob. 7TYKTCh. 39 - The body form within a species of plant may vary...Ch. 39 - Prob. 2TYKCh. 39 - Small molecules in the cell that amplify signals...Ch. 39 - According to the acid growth hypothesis, a. auxin...Ch. 39 - Which of the following situations would most...Ch. 39 - Prob. 6TYKCh. 39 - Prob. 7TYKCh. 39 - Prob. 8TYKCh. 39 - Prob. 9TYKCh. 39 - Prob. 10TYKCh. 39 - Prob. 11TYKCh. 39 - Prob. 12TYKCh. 39 - Prob. 13TYKCh. 39 - Prob. 14TYKCh. 39 - Prob. 15TYKCh. 39 - Which of the following is not a plant defense...Ch. 39 - Prob. 17TYK
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- Guttation in plants is due to condensation of water vapor and occurs through the hydathodes. D. Disagree, because guttation occurs through the stomates. A. Agree, because guttation occurs through the hydathodes. B. Disagree, because it is root pressure that causes guttation. C. Agree, because during night time, water condenses due to drop in temperature.arrow_forwardThigmotropism is a plant response toa. light. b. cold.c. touch. d. gravity. e. drought.arrow_forwardWhich of the following statements about gravity perception is FALSE? A. Statoliths are specialized amyloplasts B. Statoliths are found in statocytes C. Gravity is sensed from the root cap acropetally through the zone of division D. Columella cells sense gravity through statolith pressure on the endoplasmic reticulum E. Auxin is the main hormone involved in gravity responsearrow_forward
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