4/8 Science Assessment Practice Questions

1. Snowshoe hares experience a change in fur color from brown in the summer to white in the winter. Which statement best describes how the appearance of a particular snowshoe hare may change  after it lives in a warm environment, year round, for many generations.

a. it would have white fur all year long

b. it would have brown fur all year long

c. it would have white fur in the summer and brown fur in the winter

d. it would have brown fur in summer and white fur in the winter.

2. Some scientist believe that leopard frogs in North America came from a common species. Today, leopard frogs from different parts of the continent can no longer interbreed. Which statement describes the best explanation for this change?

a. mateing with another species of frogs causes genetic mutations.

b. mating with different populations throughout the North America causes unique species to form.

c. Geographic isolation from other populations can result in unique species.

d. Climate changes over time cause species extinction, which can result in a very small gene pool.

3. Less than 10 thousand years ago, environmental changes seperated some individuals of the squirral population to one side of the grand Canyon. Today, these squirrals now show white tail and black belly. Their ancestors exibited grey tails and white bellies. This difference in fur coloring most likely

a. is evidence of specification due to geographical isolation.

b. results from specification due to interspecies competition.

c. shows that the two populations had different food sources.

d. represents mutations that occur more frequently in one population.

4. In Australia, there are many species of organisms found nowhere else on Earth. Which reason best explains why there is a large number of unique organisms in Australia?

a. Australia has a high level of biodiversity

b. Australia is located close to the equator

c. Astrailia is isolated becasue it is an island

d. australia has many miles of coastal habitat.

5. Which characteristic of snoeshoe hares best describes evidence of species variation due to climate.

a. they are herbivores

b. they have flat front teeth

c. they have large, furry hind legs

d. they are most active in dusk and dawn

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