Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780133910605
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 46, Problem 1MC
Summary Introduction
Introduction:
Light is the crucial part of a plant life, plants perform photosynthesis to capture and store light energy as chemical energy. The onset of flowering in many plants described as a long day or short day plants, which is stimulated by the consistent seasonal changes in day length. Long day plants are flower only when uninterrupted darkness is shorter than a specific length of time that varies with the species of plant. Short day plants flower when uninterrupted darkness exceeds species-specific duration.
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A long day plant is given a long night, and is interrupted by a light pulse in the middle of the night. Which quality of the light pulse will most likely prevent flowering?
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We know that short-day plants do not really need short days, but actually long nights. Describe the type of treatment that proves this. Is some kind of light given during the night or some period of darkness given during the day?
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Chapter 46 Solutions
Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 46.1 - list six important types of plant hormones?Ch. 46.1 - Prob. 2CYLCh. 46.2 - Prob. 1CTCh. 46.2 - explain the roles of plant hormones in seed...Ch. 46.2 - Explain how the Darwin experiments using caps and...Ch. 46.2 - Prob. 2CYLCh. 46.2 - Prob. 2TCCh. 46.2 - Prob. 3CYLCh. 46.2 - Prob. 3TCCh. 46.2 - Prob. 4CYL
Ch. 46.2 - Agricultural biotechnologists have developed...Ch. 46.2 - Prob. 5CYLCh. 46.2 - Prob. 6CYLCh. 46.3 - Although insects are major plant predators,...Ch. 46.3 - Prob. 1CYLCh. 46.3 - Prob. 1HYEWCh. 46.3 - Prob. 1TCCh. 46.3 - Prob. 2CYLCh. 46 - A student reporting on a project said that one of...Ch. 46 - Prob. 1FIBCh. 46 - Prob. 1MCCh. 46 - Compare phototropism and gravitropism in roots and...Ch. 46 - Prob. 2ACCh. 46 - Prob. 2FIBCh. 46 - Prob. 2MCCh. 46 - Prob. 2RQCh. 46 - Prob. 3FIBCh. 46 - Prob. 3MCCh. 46 - What is a phytochrome? How do the two forms of...Ch. 46 - Prob. 4FIBCh. 46 - Prob. 4MCCh. 46 - Which hormones cause fruit development? Which...Ch. 46 - The hormone _________ causes stomata to close when...Ch. 46 - Prob. 5MCCh. 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....
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Watch the suggested videos for Plants Response to Stimuli. a. GeotropismGeotropism Experiment (2:48 minutes)https://www.youtube.com/watch?v=AEo5UsPeB5gb. PhototropismPhototropism Experiment (2:16 minutes)https://www.youtube.com/watch?v=WZ1NRP3OF5w a. For each experimental set up (geotropism and phototropism), identify the dependent and independent variables that have contributed to how plants responded to the stimuli.arrow_forwardA short-day plant flowers only when exposed to light for less than 12 hours long. Which of the following would cause the plant to flower? * O a 13-hour night and 11-hour day with 1 minute of darkness after 6 hours a 12-hour day and 12-hour night with a flash of red light an 8-hour day and 16-hour night with a flash of white light after 8 hours O a 9-hour night and 15-hour day with 1 minute of darkness after 7 hours 24 hours of continuous lightarrow_forwardExplain why tropical plants are often not sensitive to photoperiodic flowering cues.arrow_forward
- 1. A short-day plant flowers only when exposed to light for less than 12 hours long. Which of the following would cause the plant to flower a 12-hour day and 12-hour night with a flash of red light b. an 8-hour day and 16-hour night with a flash of white light after 8 hours c. 9-hour night and 15-hour day with 1 minute of darkness after 7 hours d. 13-hour night and 11-hour day with 1 minute of darkness after 6 hours e. 24 hours of continuous lightarrow_forwardIdentify the wrong match a.Senescence —Both auxin and ABA promote it b.Apical dominance — Auxin induces and Cytokinin counteracts c.Dormancy — Both ethylene and GA break it d.Callus differentiation — Auxin and cytokininsarrow_forwardStems and roots, respectively, exhibit a. a positive phototropic response and no phototropic response. b. a negative phototropic response and no phototropic response. c. no phototropic response and a positive phototropic response. d. no phototropic response and a negative phototropic response.arrow_forward
- Knowledge of photoperiodism can be helpful for (a) Laying out orchards in a particular area (b) Flower growers to regulate flowering as per demand (c) Farmers to shorten the period between germination and flowering a.a only b.b only c.a and b d.a and carrow_forwardThe researcher presented her findings to her colleagues. They noted that this experiment falled to provide evidence to support the length of daylight as the critical perlod responsible for the plant knowing when to flower. What If it was length of night, or the absence of light, that was critical for the flowering of the plant? With this information, she revised her experiment by exposing the plants to a flash of light during the periods of darkness, and a flash of darkness during periods of light. 4. What are the controls in this experiment?* Light Dark Shrs 12hrs 24 hoursarrow_forwardIn the Philippines, owners and managers of plant nurseries have to plan lighting schedules for a long-day plant (LDP) with a critical night length of 10 hours that will flower in December. What lighting periods and color of light enrichment will be most effective for flowering of the said LDP? A. Light periods of 15 hours with light enriched in the red range of the spectrum B. Dark periods of 11 hours with light enriched in the red range of the spectrum C. Light periods of 14 hours with light enriched in the far-red range of the spectrum D. Dark periods of 9 hours with light enriched in the far-red range of the spectrum E. Light periods of 13 hours with light enriched in the red range of the spectrum F. Dark periods of 10 hours with light enriched in the far-red range of the spectrumarrow_forward
- Which of the following is True?a. Ethylene stimulates abscission layers to form.b. Abscisic acid causes abscission layers to form.c. Ethylene is sometimes sprayed on flowers to keep them fresh.d. Abscisic acid stimulates seed germination.arrow_forwardExamples of plant hormones includea. cyclic AMP, IP3, and calcium ions.b. calcium, CDPKs, and DELLA proteins.c. auxin, cytokinin, and gibberellin.d. cryptochrome, phototropin, and phytochrome.e. statoliths, pulvini, and aerenchyma.arrow_forwardPin and thrum flowers are designed to: O a. Prevent the flowen being fertilised by its own pollen. O b. Increase the amount of pollen that the flower collects. C. Allow the flower to last for a longer period of time. d. Restrict pollinators to just one type of insect. Oe. Make the flovwer more attractive to a pollinator. O O O OOarrow_forward
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