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WorksheetsEvolution
Total questions: 20
Worksheet time: 5hrs 0mins
Charles Darwin first proposed the theory of evolution in his 1859 book, "On the Origin of Species." The theory has undergone considerable change since that year. Which of the following statements best explains why the theory of evolution is now different than it was in 1859?
The theory has been updated in more modern language.
The theory has been debunked by scientists from other fields.
The theory has been mostly retracted as incorrect parts were found.
The theory has been revised as later scientists made new discoveries.
Which of the following is NOT an example of evidence that supports the theory of evolution?
common genetic ancestors among diverse species
fossil evidence suggesting ancient genetic ancestors
unnecessary or nonfunctional organs in modern species
fossils of the same species found in diverse geographic locations
Which is the best explanation of why DNA can be used to show relationships between species?
DNA sequences will be similar among species that eat the same kinds of food.
DNA sequences will be similar in species that have evolved together through natural selection.
DNA sequences will be similar in species that undergo the same catastrophic events
DNA sequences will be similar in species that are exposed to the same radiation sources.
Which of these statements is true about fossils and how they are used in evolutionary science?
Fossils will likely show transitional species that have evolved into species alive today.
Fossils in deep layers will be of the same species that currently exist.
If fossils of some animal's ancestors are not found, it means those animals have not changed over time.
The fossils of species that are related through evolution will not be found in the same areas.
The diagram shows two populations of toads. Population B formed after a few toads from population A were carried into a new environment. Based on the diagram, how might the toads in population B differ from the toads in population A after several generations?
The toads in population B might have smaller eyes in order to see in the dark
The toads in population B might have a longer tongue in order to catch distant prey.
The toads in population B might have darker skin in order to blend into their environment.
The toads in population B might have brighter skin in order to attract prey.
Scientists believe that birds and reptiles evolved from a common ancestor over millions of years. Which of the following offers the most direct support for this theory?
the RNA of an extinct reptile
the Linnaean classification
the DNA of a living horse
the fossil record
All living organisms have the same biochemical life processes. What is most likely true?
All organisms emerged at the same time and place.
All organisms are related through evolution and natural selection.
The biochemical processes in living organisms are unrelated to evolution.
The biochemical processes arose separately in different kinds of living organisms.
What does this diagram tell you about the relationship between these organisms?
They are in the same genus.
They are in the same species.
They all have a common ancestor.
They all do not have a common ancestor.
Which of these is NOT similar in species that are related via evolution?
The proteins they produce will have similar amino acid sequences.
They will have similar embryonic development.
They will have analogous anatomical structures.
They will have similar DNA sequences.
Birds and butterflies both have wings that allow them to fly. What is most likely true about the animals?
They have similar genetic sequences.
They must have evolved from the same ancestor.
Their fossils show that their ancestor's skeletons have homologous structures.
They have analogous structures that evolved from a different source.
Tatianna studies two species of frogs. One species reproduces from January to March. The other species reproduces from March to May. How does the time period used for reproduction relate to speciation in frogs?
The two species of frogs can mate because they reproduce during the same time. As a result, they form different species.
The two species of frogs cannot mate because they reproduce at different times. As a result, they form different species.
The two species of frogs can mate because they reproduce at different times. As a result, they form different species.
The two species of frogs cannot mate because they reproduce at different times. As a result, they form the same species.
Peter and Rosemary Grant identified a new species of finch on the Galapagos Islands. This new species formed after a drought occurred on the island. How does this discovery shape our understanding in biology?
It shows that when environmental conditions change, populations change through natural selection.
It shows that when environmental conditions change, populations change through use and disuse.
It shows that when environmental conditions change, populations stay the same through use and disuse.
It shows that when environmental conditions change, populations stay the same through natural selection.
Adaptations in a population may lead to the evolution of new species. Which word is associated with the process of evolution?
change
continuity
extinction
stability
The embryos of fish, chickens, and pigs have gill slits and tails. The presence of these features suggests that
gill slits and tails are required for embryonic development.
pigs and chickens are closely related.
tails only develop fully in a land-based mammal.
these animals had a common ancestor.
When antibiotics were first developed, most infectious diseases could be controlled by them. Today, the diversity of bacteria is increasing, as certain bacteria are resistant to many antibiotics. One possible explanation for this change is that
the bacteria needed to change in order to produce more antibiotics.
some of the bacteria learned how to resist the antibiotics.
antibiotics have become weaker over the years.
the antibiotics killed most of the bacteria that did not have a mutation for resistance.
What determines which individuals will survive and pass their traits on to the next generation?
mutualism
commensalism
natural selection
reproduction
Which of the following is an example of a vestigial structure in humans?
coccyx
pelvis
radius
cerebellum
Some species of animals have moved into caves over generations. Which of the following structures would most likely to have become vestigial in these animals?
eyes
ears
tongue
legs
Lake Victoria, located in East Africa, holds over 200 species of cichlids. Cichlids are a type of fish with a unique "second" jaw in their throat. Wildlife biologists believe that Lake Victoria was initially colonized by one species of cichlid.
These facts suggest that other species of cichlids most likely developed because they
adapted when the environment was stable for a long period of time.
went through artificial selection, which changed their genotypes.
ate all the available prey in Lake Victoria, removing resources.
separated within the lake and adapted to different environments.
Which of the following is true of Darwin's theory of natural selection?
Individuals with favorable traits are more likely to survive and reproduce.
There is no variation in organisms in a population.
Only a small number of offspring in a population are born.
All individuals in a population have the same genetic traits.
