Body Length in Male Marine Iguanas of the Galapagos Islands The drawing below shows a marine iguana. Marine iguanas live on all 13 of the Galapagos Islands, located in the Pacific Ocean. These iguanas are herbivores that eat algae. The iguanas use their sharp teeth to scrape algae off of rocks located along the shorelines of the islands. The body length of the iguanas on each island is not the same. Several genes control the body length of these iguanas. Additionally, body length is related to survival in these iguanas. The graph below shows the survival rates and body lengths male iguanas on two of the islands, Genovesa and Santa Fe. Which statement about the body length of male iguanas on both islands is BEST supported by the data in Graph 1 and Graph 2? A OB O C. O D Having a longer body length increases the annual survival rate and increases the chance of reproduction. Having a longer body length decreases the annual survival rate but increases the chance of reproduction. Having a longer body length increases the annual survival rate but decreases the chance of reproduction. Having a longer body length decreases the annual survival rate and decreases the chance of reproduction.
Body Length in Male Marine Iguanas of the Galapagos Islands The drawing below shows a marine iguana. Marine iguanas live on all 13 of the Galapagos Islands, located in the Pacific Ocean. These iguanas are herbivores that eat algae. The iguanas use their sharp teeth to scrape algae off of rocks located along the shorelines of the islands. The body length of the iguanas on each island is not the same. Several genes control the body length of these iguanas. Additionally, body length is related to survival in these iguanas. The graph below shows the survival rates and body lengths male iguanas on two of the islands, Genovesa and Santa Fe. Which statement about the body length of male iguanas on both islands is BEST supported by the data in Graph 1 and Graph 2? A OB O C. O D Having a longer body length increases the annual survival rate and increases the chance of reproduction. Having a longer body length decreases the annual survival rate but increases the chance of reproduction. Having a longer body length increases the annual survival rate but decreases the chance of reproduction. Having a longer body length decreases the annual survival rate and decreases the chance of reproduction.
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,...
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Transcribed Image Text:Body Length in Male Marine Iguanas of the Galapagos
Islands
The drawing below shows a marine iguana.
Marine iguanas live on all 13 of the Galapagos Islands, located in the Pacific Ocean. These iguanas are
herbivores that eat algae. The iguanas use their sharp teeth to scrape algae off of rocks located along the
shorelines of the islands. The body length of the iguanas on each island is not the same. Several genes control
the body length of these iguanas. Additionally, body length is related to survival in these iguanas.
The graph below shows the survival rates and body lengths of male iguanas on two of the islands, Genovesa
and Santa Fe.
Which statement about the body length of male iguanas on both islands is BEST supported by the
data in Graph 1 and Graph 2?
O
Having a longer body length increases the annual survival rate and increases the chance of
reproduction.
Having a longer body length decreases the annual survival rate but increases the chance of
reproduction.
Having a longer body length increases the annual survival rate but decreases the chance of
reproduction.
Having a longer body length decreases the annual survival rate and decreases the chance
of reproduction.
Transcribed Image Text:Annual Survival Rate (%)
100-
Number of Mating Events
80
60
40
20
The information in the chart below compares some characteristics of the two islands.
Island
Genovesa
0
120 180 240 300 360 420
Body Length (mm)
Santa Fe
ģ
Genovesa
o
Santa Fe
The graph below shows the relationship between male body length, relative to the rest of the population, and the number of mating events
Graph 2: Number of Iguana Mating Events
Relative to Percent of Maximum Body Length
!
8
Characteristic Comparison
• Smaller Island (by square footage) than Santa Fe
• Has smaller algae populations in the ocean waters than Santa Fe
Larger Island (by square footage) than Genovesa
•Exposed to more upwelling of nutrients (used by algae to grow)
in the ocean waters than Genovesa
O
70
80
90
Body Length (% maximum)
Key
Iguanas on Santa Fe
Iguanas on Genovesa
100
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