Campbell Biology (10th Edition)
Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 34.3, Problem 4CC

WHAT IF? Ø Imagine that we could replay the history of life. Is it possible that a group of vertebrates that colonized land could have arisen from aquatic gnathostomes other than the lobe-fins? Explain.

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Why is the evolution of the amniotic egg significant? O Embryos are protected from predators. O Tetrapods are no longer tied to the water for reproduction. ○ Tetrapods can now function with just lungs. O Newborns are much less dependent on their parents.
It is believed that the coelacanths and lungfish represent a crucial link between other fishes and tetrapods. What is the major feature in these fish in support of this hypothesis? O Like amphibians, they are tied to the water for reproduction. Their fins have skeletal and muscular structures similar to amphibian limbs. They have lungs and are able to breathe air when water is scarce. O They have highly evolved nervous and circulatory systems. They enter a hibernative stage when food is scarce, as many tetrapods do.
See attached. 1. Which pair of animals in numbers 1-3 belongs to a common ancestral group? Explain your answer.2. Fossils and anatomical records both provide pieces of evidence of evolution. How do you determine the age of fossils of an Aurorazhdarcho micronyx and an Archeopterix?

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Campbell Biology (10th Edition)

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From Sea to Changing Sea | Early Life in the Oceans || Radcliffe Institute; Author: Harvard University;https://www.youtube.com/watch?v=Ac0TmDf5Feo;License: Standard youtube license