BIOLOGY
4th Edition
ISBN: 9781266739606
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 15, Problem 7MCQ
Why was the Mesozoic era extinction significant to the history of mammals?
a. As photosynthesis slowed, meat-eating mammals prevailed.
b. Fewer plankton species meant more open ocean ecosystems for large, aquatic mammals.
c. Dinosaur extinctions opened up new habitats to mammals.
d. Only the smartest primates knew how to survive the extinction.
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Why was the Mesozoic era extinction significant to the history of mammals? a. As photosynthesis slowed, meat-eating mammals prevailed. b. Fewer plankton species meant more open ocean ecosystems for large, aquatic mammals. c. Dinosaur extinctions opened up new habitats to mammals. d. Only the smartest primates knew how to survive the extinction.
How do fossils provide evidence that evolution has happened on Earth?
a. Fossils show that some species have gone extinct.
b. Fossils show how life forms present today are different than those from the past.
Fossils show how the sizes of certain animals has changed drastically over millions of
с.
years.
d. Different sedimentary rock layers provide evidence for how the environment has
changed over time.
The Cambrian Explosion occurred approximately 542 million years ago. During the Cambrian, what ‘exploded’?
a. The diversity of species on Earth, including many major animal phyla that exist today
b. The Yucatan Peninsula, which was hit by an asteroid
c. The quantity of oxygen in the atmosphere due to the expansion of coniferous forests
d. Numerous volcanoes worldwide, leading to the fourth mass extinction
Chapter 15 Solutions
BIOLOGY
Ch. 15.1 - How were conditions on Earth before life began...Ch. 15.1 - Prob. 2MCCh. 15.1 - Prob. 3MCCh. 15.1 - Prob. 4MCCh. 15.2 - How might the endoplasmic reticulum, nuclear...Ch. 15.2 - Prob. 2MCCh. 15.2 - Prob. 3MCCh. 15.3 - Prob. 1MCCh. 15.3 - What types of organisms flourished in the...Ch. 15.3 - How did Palaeozoic life diversify during the...
Ch. 15.3 - Prob. 4MCCh. 15.3 - Prob. 5MCCh. 15.3 - Prob. 6MCCh. 15.4 - Name and describe the three groups of contemporary...Ch. 15.4 - Prob. 2MCCh. 15.4 - Prob. 3MCCh. 15.4 - Prob. 4MCCh. 15.5 - Prob. 1MCCh. 15.5 - Prob. 2MCCh. 15 - Place the following events in Earths history in...Ch. 15 - Prob. 2MCQCh. 15 - Photosynthetic cells affected early Earth by a....Ch. 15 - Prob. 4MCQCh. 15 - Prob. 5MCQCh. 15 - Prob. 6MCQCh. 15 - Why was the Mesozoic era extinction significant to...Ch. 15 - Primates share all of the following...Ch. 15 - Prob. 9MCQCh. 15 - DNA evidence suggests that modern humans a. share...Ch. 15 - Explain how the origin of self-replicating...Ch. 15 - Prob. 2WIOCh. 15 - Review the structures of nucleic acids and...Ch. 15 - Prob. 4WIOCh. 15 - The amoeba Pelomyxa palustris is a single-celled...Ch. 15 - Prob. 6WIOCh. 15 - List the major events of the Precambrian supereon...Ch. 15 - Prob. 8WIOCh. 15 - Distinguish among the terms primate, hominid,...Ch. 15 - Explain how opposable thumbs, large brains, and...Ch. 15 - Prob. 11WIOCh. 15 - Prob. 12WIOCh. 15 - Use the Internet to learn about National...Ch. 15 - In what ways has culture been an important factor...Ch. 15 - Compare todays changing culture to biological...Ch. 15 - Prob. 16WIOCh. 15 - Prob. 1PITCh. 15 - Refer to figure 15.31 and the chapter content to...Ch. 15 - Refer to figure 15.31 and the chapter content to...
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