Worksheet: Theories of Evolution

In this worksheet, we will practice recalling Darwin and Wallace's contribution to the theory of evolution, and explaining the process of evolution by natural selection.

Q1:

Which of the following definitions most accurately describes a species?

  • AA species is a group of similar organisms that can reproduce to give fertile offspring.
  • BA species is a large group of organisms that inhabit the same ecological space.
  • CA species is a group of organisms that share a common ancestor in the last millennia.
  • DA species is a group of organisms that are physically identical.
  • EA species is a group of similar organisms that can reproduce.

Q2:

The process of natural selection is outlined below. Fill in the blanks in the following statements.

Populations naturally show in their characteristics.

  • Avariation
  • Bgenotypic frequencies
  • Cdifferentiation
  • Dcompetition

conditions in an area change causing more competition between individuals.

  • AGenotypic
  • BCommensal
  • CEnvironmental
  • DMorphological

By chance, some individuals are better for this change and survive.

  • Aadapted
  • Bacquired
  • Casserted
  • Daided

The survivors reproduce and pass on these to their offspring.

  • Adisadvantageous alleles
  • Bacquired characteristics
  • Cadvantageous alleles
  • Dadvantageous phenotypes

Q3:

Which scientist proposed the idea that organisms evolved certain features by using them more throughout their lifetime, also known as acquired characteristics?

  • AWallace
  • BLamarck
  • CWatson
  • DFranklin
  • EDarwin

Q4:

What book helped explain Darwin and Wallace’s ideas about evolution to the general public?

  • AEvolution Explained
  • BOn the Origin of Species
  • CThe History of the Species
  • DThe Voyage of the Beagle
  • ENatural Selection and Evolution

Q5:

Which of the following best explains why Lamarck’s hypothesis about evolution was rejected?

  • APeople were not able to view animals and their adaptations.
  • BThe evidence did not support his ideas.
  • CHe never published or spoke about his theories.
  • DHe was not well liked in the scientific community.

Q6:

African elephants have evolved large ears over time that help them cool down. What was the selection pressure in this evolutionary process?

  • AAdapting to the temperature/climate
  • BFood availability
  • CTraveling long distances
  • DAttracting mates
  • EAvoiding predation

Q7:

Different scientists proposed different hypotheses about how organisms changed over time. Which of the following best explains the term “hypothesis”?

  • AA hypothesis is a set of instructions to be followed to prove or disprove an idea.
  • BA hypothesis is a possible explanation for an observation.
  • CA hypothesis is an incorrect idea for a natural process.
  • DA hypothesis is a proven reason for why something happens.
  • EA hypothesis is a written conclusion from a scientific experiment.

Q8:

Which of the following processes allows new genetic variants to arise in a population?

  • AReplication
  • BSpecialization
  • CMutation
  • DMaturation
  • EMitosis

Q9:

Variations in alleles produce different observable characteristics in organisms. What term is given to the physical characteristics of an organism?

  • APhenotype
  • BGenotype
  • CPhylogeny
  • DExternal traits
  • EMutations

Q10:

Ground finches have evolved a large, powerful beak for crushing seeds. What was the selective pressure in this evolutionary process?

  • AAvoiding predation
  • BAdapting to the temperature/climate
  • CFlying long distances
  • DAttracting mates
  • EFood availability

Q11:

Which of the following is the best explanation for the connection between natural selection and evolution?

  • ANatural selection is when evolution occurs repeatedly and over time causes a change in the characteristics of a species.
  • BEvolution is when natural selection occurs repeatedly and over time causes a change in the characteristics of a species.

Q12:

A population of organisms will naturally show differences in their characteristics. Which of the following is the correct term for this?

  • AVariation
  • BCharacterization
  • CSelection
  • DSpeciation
  • EDifferentiation

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