The History Of Life On Earth Part 2 Of 2: Question Preview (ID: 29916)


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Which is a possible explanation for the large numbers of dire wolves found in the La Brea Tar Pits?
a) The wolves were more easily trapped in the tar than other animals. b) The wolves hunted in packs, and many of them would become stuck at once. c) Evacuation techniques are designed to locate wolves, so more of them are found than other animals. d) There were more dire wolves alive in the Ice Age than any other type of animal.
When did modern humans first appear?
a) 10,000 years ago b) 100,000 years ago c) 150,000 years ago d) 200,000 years ago
How were organisms in the genus Homo different from other mammals?
a) They had body hair. b) They had large brain capacity. c) They had fully functional lungs. d) They had bilateral symmetry.
Which of these organisms most recently had a common ancestor with modern humans?
a) bear b) chimpanzee c) dog d) Homo erectus
The Cambrian explosion is a good example of
a) mass extinction b) gradual extinction c) high biological diversity d) an evolutionary tree diagram
Which of these is written in the correct order of appearance on Earth (from earliest to most recent)?
a) prokaryotes; eukaryotes; photosynthesizers; multicellular life b) prokaryotes; eukaryotes; multicellular life; photosynthesizers c) eukaryotes; photosynthesizers; prokaryotes; multicellular life d) prokaryotes; photosynthesizers; eukaryotes; multicellular life
Which is a reasonable statement about the asteroid impact 65 million years ago?
a) Surviving organisms were able to diversify and spread. b) It caused birds to evolve from dinosaurs. c) This event immediately increased biodiversity. d) It was the largest asteroid impact in the solar system.
What is episodic speciation?
a) a slow, gradual decrease in species over time b) a slight increase of species in a healthy ecosystem c) an explosion of new species that occurs after a major extinction event d) a decrease of species because of an infectious disease
Suppose you find a fossil of a reptile-like organism from 150 million years ago, but its tail appears to be much shorter than that of other reptile fossils from this time period. Some body parts have feather-like extensions. What could this be?
a) mammal b) bird c) insect d) turtle
A scientist finds a fossil of an organism with porous skin that would enable the organism to live partly in water and partly on land. This organism is likely a(n)
a) insect b) arthropod c) amphibian d) reptile
What adaptations were necessary for marine organisms to evolve into land-dwelling organisms?
a) the ability to breathe air b) skin that could prevent drying out c) both A and B d) neither A or B
Why was the development of proto-amphibians so significant to life on early Earth?
a) Proto-amphibians were the first organisms not confined to a water environment. b) Proto-amphibians were the first organisms with bilateral symmetry. c) Proto-amphibians were the first organisms to reproduce sexually. d) Proto-amphibians contributed huge amounts of oxygen to the atmosphere.
The degree of variation of organisms within an ecosystem, biome, or entire planet is called
a) biome diversity b) ecological diversity c) climate diversity d) biological diversity
Where are the La Brea Tar Pits located?
a) in San Francisco b) in Los Angeles c) in New York d) in New Orleans
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