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 1, Problem 2TYK
Summary Introduction
Introduction: Experiments are designed to test the hypothesis. The data obtained from the experiments are often represented in the form of graph for easy comparison and analysis. Experiments and data analysis are a part of scientific methods to test a good hypothesis. A hypothesis is a possible prediction of phenomena, based on observations.
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You want to distinguish between two hypotheses to explain the patterns you see:
1) Males not feeding the young is an adaptation to dimorphism
2) If males don't feed the young in a species, it will allow them to become brightly colored
To begin to address this question, map the characters changes in dimorphism and males feeding
the young onto each of the trees on the previous page.
CHARACTER
SEXUAL DIMORPHISM
MALES FEED YOUNG
Cassin's Vireo
No
No
Red Fox Sparrow
Cape May Warbler
Cedar Waxwing
Golden-Crowned Kinglet
Pyrrhuloxia
Yes
No
No
No
No
Yes
No
Yes
Yes
No
California Gull
No
Yes
Note: This data is fictional
5) Which of the hypotheses in part 4 is consistent with your analysis? Explain why in a brief paragraph.
According to the video, what was the effect of artificially-modified ant density in acacias on the elephant feeding behavior? (Choose one.)
a. As the number of ants swarming increased per minute on acacia branches, so did the number of branches fed on by elephants.
b. As the number of ants swarming increased per minute on acacia branches, the number of branches fed on by elephants decreased.
c. As the density of ants per A. depranolobium increased, the number of trees fed on by elephants decreased.
d. Elephants fed more frequently on Acacia depranolobium trees with their ants removed than on A. depranolobium trees with ants.
video link:
https://www.youtube.com/watch?v=s3blzcbll7Q&t=293s
Suppose you want to examine the effect of a fertilizer on the size of eggplant produced, and therefore, you need to establish the experimental and control groups.
A. What could represent the control group?
B. What will be your experimental group?
C. What will be the best way to establish a relationship between your two variables?
Chapter 1 Solutions
Study Guide for Campbell Biology
Ch. 1 - Prob. 1IQCh. 1 - Describe the pathway from DNA nucleotides to...Ch. 1 - Explain how the movement of energy in an ecosystem...Ch. 1 - What is a commonly used criterion for placing...Ch. 1 - Describe in your own words Darwins theory of...Ch. 1 - Prob. 6IQCh. 1 - a. Compare hypotheses and theories. b. Compare...Ch. 1 - a. Compare hypotheses and theories. b. Compare...Ch. 1 - The overarching theme of biology is a. scientific...Ch. 1 - Prob. 2TYK
Ch. 1 - Why can a hypothesis never be proven to be true?...Ch. 1 - Which of the following statements is an example of...Ch. 1 - The smallest unit that shows the emergent...Ch. 1 - In a pond sample, you find a unicellular organism...Ch. 1 - A biologist studying interactions among...Ch. 1 - With respect to information flow, transcription is...Ch. 1 - Prob. 9TYKCh. 1 - Which of the following themes of biology is most...Ch. 1 - Prob. 11TYKCh. 1 - Which of the following best accounts for the...
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