Biology with Connect Access Card
10th Edition
ISBN: 9780077705701
Author: Raven, Peter
Publisher: McGraw-Hill Education
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Chapter 41, Problem 2A
Your roommate is taking biology with you this semester and thinks he understands shod- and long-day plants. He purchases one plant of each type and decides to see the difference himself by first trying to cause the short-day plant to flower. He places both plants under the same conditions and exposes each to a regimen of 10-hr days, expecting that the short-day plant will flower, and the long-day plant will not You play a trick on your roommate and reverse the outcome Specifically, what did you have to do?
a. Lengthen the time each is exposed to light.
b. Shorten the time each is exposed to light.
c. Quickly expose the plants to light during the middle of the night.
d. None of the choices is correct.
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Alex thought that flower formation must be dependent on water. If this was true, he expected that the more water plants got, the more flowers they would produce. In order to test this, he obtained 200 identical petunia plants. He separated these into twenty groups of 10 plants each. He re-potted each petunia into identical containers, using the same bag of potting soil. He placed each group of plants in a large open field with no shade. Group 1 received only rain water. Each of the other groups received 10 additional ml of water, plants in group 3 received 20 additional ml of water and so on, so that plants in group 20 each received a total of 190 ml of water each evening, in addition to the rainwater. The plants were allowed to grow under these conditions for three months. When the plants bloomed, Alex recorded the number of blossoms on each petunia.
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Independent variable
Dependent variable
Controlled variables
Control treatment
So I am checking my work.…
Urkle decided he wanted to test the effects of watering his plants with cold coffee. For a week he watered one group of plants cold coffee. He ignored the other group of plants. Urkle has no idea what might happen to plants that receive coffee. What is wrong with Urkle's experimental design?
If Urkle wants to test the effects of cold coffee on plant growth, he should water his control group with cold water.
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If Urkle wants to test to test the effects of cold coffee on plant growth, he should water the plants in the other group with hot coffee.
If Urkle wants to test the effects of cold coffee on plant growth, he can ignore the control group as long as he makes sure both groups get the same amount of sun.
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Chapter 41 Solutions
Biology with Connect Access Card
Ch. 41 - Morphogenesis is the development of a. growth...Ch. 41 - Vernalization induces flowering following exposure...Ch. 41 - Prob. 3UCh. 41 - Which of the following is NOT a component of a...Ch. 41 - Megasporcs are produced in a. anthers by mitosis....Ch. 41 - A stamen contains a a. style. b. stigma. c....Ch. 41 - Unlike bee-pollinated flowers, bird-pollinated...Ch. 41 - Prob. 8UCh. 41 - Endosperm is produced by the union of a. a central...Ch. 41 - During the globular stage of embryo development,...
Ch. 41 - Which of the following is NOT a primary meristem?...Ch. 41 - Prob. 12UCh. 41 - The shoot tip of an emerging maize seedling is...Ch. 41 - Asexual reproduction is likely to be most common...Ch. 41 - Prob. 15UCh. 41 - Prob. 16UCh. 41 - Prob. 17UCh. 41 - Prob. 1ACh. 41 - Your roommate is taking biology with you this...Ch. 41 - In Iowa, a company called Team Corn works to...Ch. 41 - Prob. 4ACh. 41 - One of the most notable differences between gamete...Ch. 41 - A plant lacking the WOODEN LEG gene will likely a....Ch. 41 - How would plant development change if the...Ch. 41 - Prob. 8ACh. 41 - Loss-of-function mutations in the suspensor gene...Ch. 41 - Prob. 1SCh. 41 - If you live in a north temperate region, explain...Ch. 41 - In wild columbine flower morphology encourages...Ch. 41 - In most part of the world, commercial potato crops...Ch. 41 - Design an experiment to determine whether light or...
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