Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Question
Multiple choice (one answer is correct)
a.decrease; directional
b.increase; disruptive
c.increase; directional
d.decrease; disruptive
![Two scientists measured the snout-to-vent (anus) length of Galápagos marine iguanas (lizards) and
observed the percent survival of different-sized animals, all of the same age. The graph shows the
log snout-vent length (SVL, a measure of overall body size) plotted against the percent survival of
these different size classes for males and females.
1007
80-
60-
Females
40-
Males
20-
0-
1.9
2.1 2.2 2.3 2.4 2.5 2.6 2.7
Log SVL (mm)
|
(Data from M. Wikelski and L. Michael Romero. Body size, performance and fitness in
Galapagos marine iguanas. Integrative and Comparative Biology 43:376-386 [2003].)
Currently, the only predators of Galápagos marine iguanas are Galápagos hawks. Although small
iguanas can sprint faster than large iguanas, iguana body size is not correlated with risk of hawk
predation. If predators (for example, cats) that preferentially catch and eat slower iguanas are
introduced to the island, iguana body size is likely to
in the absence of other factors; the
iguanas would then be under
selection.
Survival (%)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb939716-f2f1-4033-ba6a-c44c88241f8b%2F98d93ed5-9009-400c-b82e-bdd17fbb34f4%2F04nrxga_processed.png&w=3840&q=75)
Transcribed Image Text:Two scientists measured the snout-to-vent (anus) length of Galápagos marine iguanas (lizards) and
observed the percent survival of different-sized animals, all of the same age. The graph shows the
log snout-vent length (SVL, a measure of overall body size) plotted against the percent survival of
these different size classes for males and females.
1007
80-
60-
Females
40-
Males
20-
0-
1.9
2.1 2.2 2.3 2.4 2.5 2.6 2.7
Log SVL (mm)
|
(Data from M. Wikelski and L. Michael Romero. Body size, performance and fitness in
Galapagos marine iguanas. Integrative and Comparative Biology 43:376-386 [2003].)
Currently, the only predators of Galápagos marine iguanas are Galápagos hawks. Although small
iguanas can sprint faster than large iguanas, iguana body size is not correlated with risk of hawk
predation. If predators (for example, cats) that preferentially catch and eat slower iguanas are
introduced to the island, iguana body size is likely to
in the absence of other factors; the
iguanas would then be under
selection.
Survival (%)
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