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 8IQ
a.
Summary Introduction
To define: How could a plant survive the stress of very hot and dry weather?
Introduction: Plants are able to respond to abiotic environmental stress as well as biotic stresses. Some examples of biotic stresses are pathogens and herbivores. Some examples of abiotic environmental stresses are drought, soil salinity, mineral toxicity, excessive watering, and extremes temperature and weather.
b.
Summary Introduction
To define: How could a plant respond to an abnormal cold and wet fall.
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Students have asked these similar questions
a. How do stem being cut underwater affect the speed of absorption of water?
b. Why do wilted plants are slow when it comes to absorption of water?
nypothesis:
B. Leaf Abscission
Ethylene is the only plant hormone that is a gas. As such it can easily move from one
plant to another.
Your lab instructor may recruit you to help set up the following experiment. Arrange
cuttings of holly shoots into two jars filled with water. Place each under a bell jar. Under one
of the bell jars, also place a piece of fruit. You may choose whether or not to cut the fruit.
Over the next week or two observe and compare the two sets of holly cuttings.
3. What differences do you anticipate observing?
4. Formulate
your hunch into a null and an alternative hypothesis:
a. Null Hypothesis:
b. Alternative Hypothesis:
C. Effects of Gibberellic Acid on Dwarf Corn
Dwarf corn (Zea mays) plants have been grown for you. These plants are shorter than
Which of the following would allow a plant to tolerate a cold environment?
Group of answer choices
A. producing small, smooth leaves with a small boundary layer
B. generating sparsely placed leaf hairs to reflect solar radiation
C. increasing the proportion of unsaturated fatty acids in cell membranes
D. increasing evapotranspiration
E. increasing the proportion of leaf mass relative to total body mass
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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- B. 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_forward. A nutrient defiency symptom exhibited interveinal chlorosis of older leaves first. Indicate the deficient element and explain why such symptom is shown and first expressed in older leaves.arrow_forwardPlants that have acclimated to drought stress are often more resistantto freezing stress as well. Suggest a reason whyarrow_forward
- B. Match the hormones that are supposed to be added to a plant in order to achieve the following results: a. Auxin b. Gibberellin c. Cytokinin d. Abscisic Acid e. Ethylene 19. unpollinated flowers are treated with this hormone so ovary enlarges and becomes a seedless fruit 20. substitute for temperature or light cues in plant seeds to get them to germinate 21. black spots on banana skin are spots where these are produced inducing ripening 22. seeds/bulbs stay dormant during winter to ensure survival of the plant when it germinates 23. most grape growers spray this in vines to increase length of branches between fruit clusters for more air spaces among fruits to lower fungal infections 24. sprayed on cut leaves and stems so they will remain green longer while unsprayed leaves will turn yellow and diearrow_forwardB. Match the hormones that are supposed to be added to a plant in order to achieve the following results: a. Auxin b. Gibberellin c. Cytokinin d. Abscisic Acid e. Ethylene 19. unpollinated flowers are treated with this hormone so ovary enlarges and becomes a seedless fruit 20. substitute for temperature or light cues in plant seeds to get them to germinate 21. black spots on banana skin are spots where these are produced inducing ripening 22. seeds/bulbs stay dormant during winter to ensure survival of the plant when it germinates 23. most grape growers spray this in vines to increase length of branches between fruit clusters for more air spaces among fruits to lower fungal infections 24 spraved on cut leaves and stems so they will remain green longer while unsprayed leaves will tum yellow and diearrow_forwarda. What are the two basic components of phytochrome? b. Explain how phytochrome responds to different wavelengths of light. How does this account for the phenomenon of photoreversibilty?arrow_forward
- The 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_forwardDifferentiate signs vs. symptoms of plant disease?arrow_forwardSubject: Environmental Physiology State the percentage range of the fresh weight of plants that is made up of water, and situate herbaceous and woody plants in this range.arrow_forward
- asap.arrow_forwardDifferentiate the saturation concept from the limiting factor concept of plant response to the environment.arrow_forward5. Identify the type of environmental plant stress (abiotic or biotic) and suggest a response to or defense against the stressor. D) Hypertonic (high salt concentration) conditions E) Summer heatarrow_forward
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