Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 46, Problem 5MC
Summary Introduction
Introduction:
Plant hormones coordinate the development and ripening of fruits and seeds. Seed maturation is closely coordinated with fruit ripening because most seeds are dispersed in fruits. Auxins, gibberellins, ethylene, and abscisic acid are the important plant hormones. Tropisms represent the movement towards or away from the specific environmental stimuli. Tropisms are mainly caused by unequal cell elongation. It takes place when a stimulus enhances or inhibits cell elongation without disturbing the rate of cell division.
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Which 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 response
Which of the following statements is false?a. Auxin and gibberellin promote stem elongation.b. Cytokinin triggers growth of lateral buds.c. Abscisic acid promotes water loss and dormancy.d. Ethylene promotes fruit ripening and abscission
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O b. Cytokinin
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Chapter 46 Solutions
Biology
Ch. 46.1 - list six important types of plant hormones?Ch. 46.1 - Prob. 2CYLCh. 46.2 - Explain how the Darwin experiments using caps and...Ch. 46.2 - Prob. 1CTCh. 46.2 - Prob. 2TCCh. 46.2 - Prob. 3TCCh. 46.2 - Agricultural biotechnologists have developed...Ch. 46.2 - explain the roles of plant hormones in seed...Ch. 46.2 - Prob. 2CYLCh. 46.2 - Prob. 3CYL
Ch. 46.2 - Prob. 4CYLCh. 46.2 - Prob. 5CYLCh. 46.2 - Prob. 6CYLCh. 46.3 - Although insects are major plant predators,...Ch. 46.3 - Prob. 1HYEWCh. 46.3 - explain how plants that are attacked by predators...Ch. 46.3 - explain how plants that are attacked by predators...Ch. 46.3 - Prob. 3CYLCh. 46.3 - Prob. 4CYLCh. 46.3 - Prob. 1TCCh. 46 - Prob. 1MCCh. 46 - Prob. 2MCCh. 46 - Prob. 3MCCh. 46 - Prob. 4MCCh. 46 - Prob. 5MCCh. 46 - Prob. 1FIBCh. 46 - Prob. 2FIBCh. 46 - Prob. 3FIBCh. 46 - Prob. 4FIBCh. 46 - The hormone _________ causes stomata to close when...Ch. 46 - Compare phototropism and gravitropism in roots and...Ch. 46 - Prob. 2RQCh. 46 - What is a phytochrome? How do the two forms of...Ch. 46 - Which hormones cause fruit development? Which...Ch. 46 - What is senescence? Describe some changes that...Ch. 46 - Prob. 6RQCh. 46 - Describe one example of a plant chemical defense...Ch. 46 - Describe how a sensitive plant closes its leaves....Ch. 46 - A student reporting on a project said that one of...Ch. 46 - Prob. 2AC
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