Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 30, Problem 2SQ
Summary Introduction
Concept introduction: Plant hormones (phytohormones) are chemical molecules that are produced by plants in very low concentrations. They do a signaling function by which all the major functions in a plant body are sequentially coordinated. Flowering process, fruit ripening, shedding of leaves are some of the major functions associated with phytohomones. In plants, they are not synthesized locally; rather, they often diffuse into all the other parts.
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Plant hormones______ . a. trigger the same responses in animals and plants b. are cues for tropisms c. do not participate in stress responses d. may have different effects in different tissues
Ethylene respond synergistically with another plant hormone ‘X’ for promoting shedding of leaves, flowers and fruits. The hormone ‘X’ can be used in agriculture for
a.Inducing fruit ripening
b.Increasing internode elongation
c.Reducing requirement of irrigation
d.Promoting flowering
When you prune shrubs to make them “bushier”—that is, to prevent apical dominance—you are affecting the distribution and action of which plant hormone? (a) auxin (b) jasmonic acid (c) salicylic acid (d) ethylene (e) abscisic acid
Chapter 30 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 30 - Volatile Secondary Metabolites in Plant Stress...Ch. 30 - Volatile Secondary Metabolites in Plant Stress...Ch. 30 - Volatile Secondary Metabolites in Plant Stress...Ch. 30 - Prob. 4DAACh. 30 - Prob. 1SQCh. 30 - Prob. 2SQCh. 30 - Prob. 3SQCh. 30 - _______ is the hormone in most rooting compounds....Ch. 30 - Prob. 5SQCh. 30 - Prob. 6SQ
Ch. 30 - Prob. 7SQCh. 30 - Ethylene differs from other hormones in that it...Ch. 30 - Prob. 9SQCh. 30 - Prob. 10SQCh. 30 - Prob. 11SQCh. 30 - Prob. 12SQCh. 30 - Match the hormone with the description. _____...Ch. 30 - Prob. 14SQCh. 30 - Prob. 15SQCh. 30 - Professional gardeners often soak seeds in...Ch. 30 - Photosynthesis sustains plant growth, and inputs...Ch. 30 - Prob. 3CTCh. 30 - Cattle in industrial dairy farms are typically...Ch. 30 - The oat coleoptiles on the left have been...
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- Match the observation with the main hormones.. ___ ethylene a. Your cabbage plants bolt they form elongated flowering stalks. ___ cytokinin b. The potted plant in your room is leaning toward the window ___ auxin c. Lateral buds are sprouting. ___ gibberellin d. The seeds of your roommates marijuana plant do not germinate no matter what he does to them. ___ abscisic acid e. The last of your apples is getting really mushy ___ nitric oxide f. Your lettuce plants develop brown spots on their leaves.arrow_forwardWhich of the given plant hormone will be more abundant in dormant buds and seeds? a.Gibberellin b.ABA c.Ethylene d.Auxinarrow_forwardChoose the correct answer. These are chemical messenger that modulate the development of the different organs such that their relative growth is integrated and coordinated with each other? a) Psychohormones b) Fertilizers c) Phytohormones d) Plant Nutrientsarrow_forward
- Which hormone(s) is/are responsible for the ability of sunflowers to turn their flowers to track the sun throughout the day? Explain how these hormones work.arrow_forward1. This hormone also helps in the plant regulation of body fluid A. Gibberellins B. Ethylene C. Abscisic Acid D. Auxin 2. This TRIGGERS the guard cells daily clocking in every 24 hours A. Aquaporins B. Circadian rhythm C. Abscisic Acid D. Lactic acidarrow_forward1. A) Describe the three steps (Reception, Transduction, Response) of de-etiolation (greening response) signal transduction in plants. B) Describe a signal transduction (give the stimulus and response) that may occur in humans.arrow_forward
- Plant cells communicate in a variety of ways to elicit cellular responses. In the figure below the plant is responding the presence of light with the release of auxin. Auxin was first discovered for its ability to promote growth in plants. It is a plant hormone that inhibits the lengthening and stimulate the formation of lateral roots and root hairs. (c) Explain how the behavioral responses of the plant affect their overall fitness. ( refer to picture )arrow_forwardMany plants mimic other plants or other animals in order to attract pollinators. a) Describe one example of plants mimicking either other plants or other animals in order to attract pollinators. b) Why might these “cheating” strategies have evolved rather than developing “truthful” signals to attract a pollinator?arrow_forwardMatch the hormone with the observation. ___ ethylene a. Your cabbage plants form ___ cytokinin elongated flowering stalks. ___ auxin b. The potted plant in your room ___ gibberellin is leaning toward the window. ___ ABA c. The last of your apples is getting ___ nitric oxide really mushy. d. The seeds of your roommate’s marijuana plant do not germinate no matter what he does to them. e. Lateral buds are sprouting. f. Your lettuce plants develop brown spots on their leaves.arrow_forward
- Which of the following plant structures is not a defense against herbivory? a. thorns b. spines c. nectar d. alkaloidsarrow_forwardPlants of the genus Fuchsia produce deep pink to red flowers thatdangle from plants, produce nectar in floral tubes, and have no scent.Based on these features, which animal is most likely to be a coevolvedpollinator of these plants?a. bee b. bat c. hummingbird d. butterfly e. motharrow_forwardAn important difference between plant development and animal development is that______ . a. only plant development depends on hormones b. plants continue to develop throughout their lifetime c. animals, but not plants, have a circulatory systemarrow_forward
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