Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 39, Problem 13TYU
Summary Introduction
To discuss: How the grazing of shoot tips by an herbivore affects the health, structure, physiology and biochemistry of a plant and which hormones would cause these effects / changes.
Introduction:
Plant-eating animals and insects are a kind of stress for plants. This mechanical stress due to wounding will produce the gas ethylene. This ethylene is a gaseous hormone responsible for the formation of triple response in plants.
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Students have asked these similar questions
Briefly define what a plant hormone is. Also, explain, using an example for each, of how hormones can both work together and work against each other when they are received by a particular part of a plant.
In bullet points or short paragraphs. No images.
A- Describes the mechanism of action at the pharmacological level of the Rubus Chingii plant.
B- What is the dosage to give Rubus Chingii herb to a dog and a cat?
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You have been chosen as the lead student gardener for the CSUMB Future Farmers of America Club (FFAC). Your club is looking to you and your Bio211 plant experience to guide them. You arrive at the new FFAC garden plots and notice that while there are many fruits on the apple tree, they seem to remain hard, sour, and green. Your club mates need the red, sweet apples in just a few days for the apple competition.
Choose the best hormone to apply and the reason supporting its use:
Select one:
a. Apply ethylene to the apples to increase ripening.
b. Apply ethylene to slow ripening and increase chlorophyll levels.
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Chapter 39 Solutions
Campbell Biology
Ch. 39.1 - Prob. 1CCCh. 39.1 - Cycloheximide is a drug that inhibits protein...Ch. 39.1 - Prob. 3CCCh. 39.2 - Prob. 1CCCh. 39.2 - WHAT IF? If a plant has the double mutation err...Ch. 39.2 - MAKE CONNECTIONS What type of feedback process is...Ch. 39.3 - If an enzyme in field-grown soybean leaves is most...Ch. 39.3 - WHAT IF? If a plant flowers in a controlled...Ch. 39.3 - Prob. 3CCCh. 39.4 - Prob. 1CC
Ch. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.5 - Prob. 1CCCh. 39.5 - Chewing insects mechanically damage plants and...Ch. 39.5 - Many fungal pathogens get food by causing plant...Ch. 39.5 - Prob. 4CCCh. 39 - What are two common ways by which signal...Ch. 39 - Is there any truth to the old adage, "One bad...Ch. 39 - Why did plant physiologists propose the existence...Ch. 39 - Plants that have acclimated to drought stress are...Ch. 39 - Prob. 39.5CRCh. 39 - Prob. 1TYUCh. 39 - Prob. 2TYUCh. 39 - Prob. 3TYUCh. 39 - How may a plant respond to severe heat stress? (A)...Ch. 39 - Level 2: Application/Analysis 5. The signaling...Ch. 39 - If a long-day plant has a critical night length of...Ch. 39 - Prob. 7TYUCh. 39 - DRAW IT Indicate the response to each condition by...Ch. 39 - Level 3: Synthesis/Evaluation 9. EVOLUTION...Ch. 39 - SCIENTIFIC INQUIRY A plant biologist observed a...Ch. 39 - SCIENCE. TECHNOLOGY, AND SOCIETY Describe how our...Ch. 39 - Prob. 12TYUCh. 39 - Prob. 13TYU
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- Application of synthetic compounds could artificially modify the plant growth and development, i.e. inducing germination in dormant seeds, producing parthenocarpic fruits, promoting shoot initiation in tissue culture. Collectively, they are called ________________ which are synthetic compounds that imitate the organic naturally occurring substances that modify plant growth anddevelopment at low concentrations.arrow_forwardThe summer is not optimal for grape growing and you're searching in your memory for something regarding plant hormones. Explain 2 ways you could utilize plant hormones (choose from auxin, ethylene, cytokinin, gibberellin, abscisic acid, salicylic acid, jasonic acid) to compensate for a problem during growing. For each way:arrow_forwardMatch each hormone to its function or application. NOTE: If none of the options are correct, you MUST select #4for 'none of the above', otherwise it will be graded as incorrect Question 14 options: Auxin Giberellins Cytokinins Ethylene 1. Used in anti-aging skin creams. 2. Ripens fruit. 3. Causes stems to bend towards the light. 4. None of the abovearrow_forward
- Explain the differences between plant hormones and plant growth regulatorsarrow_forwardB. Identify the parts of a manipulative experiment from other plant hormones as it is the only gaseous hormone. We often make use of this Ethylene is a hormone produced by many plants to initiate the ripening of fruit. It is unique still present, the fruit can ripen. The bag serves to capture the gas around the fruit and hormone when we purchase under-ripe fruit and place it in a paper bag. If adequate ethylene is concentrate it. Ethylene also stimulates plant growth in the spring after winter dormancy. be used to ripen tomatoes that are picked early due to frost. You take 500 tomatoes and divide As an employee of a biotech firm, you've been asked to develop an ethylene chamber that can million (ppm) of ethylene. Group 2 is placed in a chamber with 100 ppm of ethylene. Group 3 is them into four groups of 125 tomatoes each. Group 1 is placed in a chamber with 0 parts per placed in a chamber with 250 ppm of ethylene. Group 4 is placed in a chamber with 500 ppm ethylene. Each tomato was…arrow_forwardA. Give two functions of any plant hormome. B. Describe in detail the effects of a specific signal transduction pathway that begins with a plant hormone. Name the hormone and the give the effect in detail.arrow_forward
- What are the effects brought by cytokinin in plants? Explain the partnerships between cytokinin with auxin and hormone mentioned in Question 3 a). (i) (ii) Write an account on interactions between gibberellins, indole acetic acid and abscisic acid in plant growth promotion and seed germination.arrow_forwardList 3 environmental factors discussed in lectures and give examples of physiological and biochemical perturbations in plants caused by fluctuations in these environmental factors. For each of the 3 environmental factors describe the primary effects and the secondary effects.arrow_forwardDiscuss the importance of determining the physical characteristics/properties of citrus and onionarrow_forward
- Many different treatments were possible in the phototropism experiment. Based on your understanding of phototropism, provide predictions about the direction of plant growth for the following two scenarios, and explain your reasoning. 1. The tip of the coleoptile is removed and lanolin with auxin is applied to the dark side of the stem. 2. The tip of the coleoptile is removed and lanolin with auxin is applied to the light side of the stem.arrow_forwardHormones and signal pathways Complete the following paragraph to describe signal transduction as it occurs within plants. Choices may be used more than once or not at all. Chemical signals called play an important role in a plant's ability to respond to a stimulus. These signals bind to receptors, the first step in a cellular response called a may be located in the plasma membrane, the cytoplasm, the nucleus, or the endoplasmic reticulum. The series of relay proteins or enzymes activated by the hormone binding the receptor make up the Some responses are immediate, while others require a like Ca*, to initiate a cellular response. The result of the transduction pathway is a which is often the transcription of specific genes, resulting in some measurable change. hormones reflex arc signal transduction pathway Signal transducers second messenger response Receptor proteins first messengerarrow_forwardScientists studied changes in proline, which is an indicator of plant stress and overall protein content in the corn plant when leaves had been consumed by grasshoppers. Corn plants were exposed to varying numbers of grasshoppers and compared to control plants with no grasshopper exposure. The bar graphs, with error bars, show the mean proline and protein content. The dashed lines show the proline and protein content of healthy plants 10 days prior to treatment. Which of the following statements would most likely describe the growth of corn plants in this study? When there is a decrease in the number of grasshoppers (dependent variable) measured against proline and protein content (independent variables), the corn plants would have slower growth and be smaller than the control plants. When there is an increase in the number of grasshoppers (dependent variable) measured against proline and protein content (independent variables), the growth of the corn plants would be similar…arrow_forward
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