Multiple Choice
Adaptive radiations are often seen after __________.
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24. History of Life on Earth
History of Life on Earth
Back24. History of Life on Earth
History of Life on Earth
- Multiple ChoiceWhat were the two major "problems" that had to be solved before plants, animals, and fungi could fully move into terrestrial habitats?887views
- Multiple ChoicePlants colonized land in the company of __________; their symbiotic relationships still exist today.994views
- Multiple ChoiceWhich of the following best describes how the breakup of Pangaea affected evolution?1199views
- Multiple ChoiceLake Malawi, in the African Rift Valley, is home to more than a hundred species of cichlid fishes, each with slightly different diets and habits. All these species probably evolved from a common ancestor, making them an example of __________.976views
- Multiple ChoiceThe fauna and flora of Australia are very different from those of the rest of the world. Why might this be true?1087views
- Multiple ChoiceAlthough they originated around 180 million years ago, mammals underwent an adaptive radiation starting approximately 65 million years ago. Why?1889views
- Multiple ChoiceMutations in what class of genes have probably been responsible for many of the changes leading to the great diversity of life existing today?874views
- Multiple ChoiceIf the feathers of extant flying birds originally arose as thermoregulatory devices in ancestral reptiles, then flight feathers could be accurately described as __________.714views
- Multiple ChoiceIn the species selection model, __________ is to macroevolution as __________ is to microevolution.1311views
- Multiple ChoiceWhich of the listed examples is a current hypothesis regarding the Cambrian explosion?894views
- Multiple ChoiceWhich of the following occurred during the Mesozoic era?1394views
- Textbook Question
How many different species have been identified by science?
How many are estimated to exist?
1308views - Textbook Question
Fossilized stromatolites:
a. Formed around deep-sea vents.
b. Resemble structures formed by bacterial communities that are found today in some shallow marine bays.
c. Provide evidence that plants moved onto land in the company of fungi around 500 million years ago.
d. Contain the first undisputed fossils of eukaryotes.
868views - Textbook Question
A cell is placed in a solution that is hypotonic to the cell. Which of the following best describes movement of water in this situation?
a. Water will only flow into the cell.
b. Water will only flow out of the cell.
c. Water will flow into and out of the cell, but the overall net movement will be out of the cell.
d. Water will flow into and out of the cell, but the overall net movement will be into the cell.
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