The dodo was a large flightless bird that lived on Mauritius in the Indian Ocean. Shortly after the arrival of the Dutch to the island in 1638 the Dodo became extinct. Which of the following is a reason they became extinct?
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Dodos were hunted as a food source
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Pig, rats and cats ate the dodos' eggs
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Climate change affected the dodos' habitat
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Dodos had no fear of humans or other predators
Q.2.
What is speciation?
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The destruction of a species
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The evolution of a new species
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Where a species splits into two or more sub-groups
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The localisation and specialisation of a species
Q.3.
How does evolution allow species to keep ahead of gradual climate change?
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Adaptation at each generation allows them to make small gradual changes to keep up with climate change
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The change in temperature will influence predator and prey equally
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The change in the species will occur ahead of the change in the climate
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Adaptation will occur to all the members of the species equally allowing them all to survive
Q.4.
Which of the following is a possible reason for a single mass extinction event?
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Erupting volcanos
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Over hunting
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An ice age
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Asteroid impact
Q.5.
Passenger pigeons are an example of an extinct species. As a key part of the North American ecosystem they are a candidate for de-extinction. What is this process?
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Genetically modifying an unrelated species to resemble an extinct species
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Replacing the extinct species with another similar species
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Removing some predators from the food chain to balance the loss of the extinct species
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Cloning the species from the DNA of preserved specimens
Q.6.
Why might a new predator entering an area lead to extinctions?
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The new predator will be looking for novel foods
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A predator moving into a new area will kill off all the other predators in the area
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New predators will encourage other predators to hunt in case they consume all the food resources
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Native prey have no awareness or defences against the new threat
Q.7.
Which of the following is a type of evidence used to show mass extinctions in the past?
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Written records
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Fossil record
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Ice cores
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Soil samples
Q.8.
Which of the following is commonly a reason for a species to go extinct?
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New predators moving into or being introduced into an area
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New disease is introduced to a population
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Random mutation in DNA
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Habitat loss and destruction
Q.9.
Which of the following is a reason some people argue we shouldn't bring species like the woolly mammoth back from extinction?
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There aren't enough mammoth carcasses to recover DNA
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Their habitat has changed and the mammoths will struggle to cope with global warming
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There is no species large enough to carry a wooly mammoth foetus to term
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Extinct animals are meant to be gone forever
Q.10.
Why did the early human ancestor species Homo erectus become extinct?
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Homo erectus was outcompeted by the more aggressive Homo neanderthalensis
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The ice age was too harsh for Homo erectus to survive
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Homo erectus evolved into a different species
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An outbreak of disease reduced the Homo erectus population to below functional numbers
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