Unit 5: Evolution CFA Practice

The relationship between bird beak size and the type of food they eat is:

• Birds with larger beaks eat larger food items, while birds with smaller beaks eat smaller food items.

• Birds with smaller beaks eat larger food items, while birds with larger beaks eat smaller food items.

• There is no relationship between bird beak size and the type of food they eat.

• Birds with larger beaks eat smaller food items, while birds with smaller beaks eat larger food items.

Which evidence shows closest relationship between chimpanzees and humans?

• They have the fewest similar anatomical features and genes.

• They are the farthest apart from each other on the cladogram.

• They have the fewest base pairs in common with each other.

• They have the least genomic difference between them.

Which statement BEST describes what happened to the population of red lizards?

• The population remained stable because they were better able to hide and avoid being eaten by predators. The population of red lizards disappears; it does not remain stable.

• The population decreased because they were unable to survive in the environment and reach reproductive age. Future generations of red lizards make up 0% of the population. This is evidence that they were unable to survive to reproductive age.

• The population remained stable because they were able to pass on their traits to each generation of offspring. The population of red lizards disappears before the tenth generation, which suggests that they did not survive to pass on their traits.

• The population decreased because their skin coloring was the result of a mutation in the original population. The lizards with black skin were also the result of a mutation and were able to survive and then thrive.

Which color of lizard had a 60% population in Generation 30?

• Black

• Green

• Red

• Blue

Some organisms that share a common ancestor have features that have different functions, but similar structures. These are known as

• fossil structures

• homologous structures

• analogous structures

• vestigial structures

Which primate is most genetically similar to humans according to the table?

• Chimpanzee

• Gorilla

• Orangutan

• Vervet

How does the graph describe the distribution of spines on spiny cacti?

• The graph shows a uniform distribution of spines across all cacti.

• The graph indicates a higher concentration of spines on certain cacti.

• The graph illustrates a random distribution of spines on cacti.

• The graph depicts no clear pattern in the distribution of spines.

Many species have embryos with very similar features during early development. What does this tell us about these organisms? The embryos below are in chronological order from top to bottom.

• It's likely that they all share a common ancestor

• They are all closely related to each other

• There is only one template for embryos that all organisms have to use

• All organisms have gills to breathe in the ocean

What environmental change occurred that affected bird beak sizes?

• Change in climate

• Introduction of new predators

• Availability of different food sources

• Migration patterns

Which statement BEST explains why the pattern of data in the graph supports the claim that natural selection could occur for this spiny cactus population?

• The data pattern shows variation in the spine number trait, which does not affect survival.

• The data pattern shows that most spiny cacti have a small number of spines, which affects survival.

• The data pattern shows variation in the spine number trait, which affects survival.

• The data pattern shows that most spiny cacti have a large number of spines, which does not affect survival