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Worksheets11 - Evolution Mega Review - May 8
Total questions: 62
Worksheet time: 2hrs 29mins
What does the concept of "Descent with modification" in evolution primarily suggest?
Species remain unchanged across generations
All living things are unrelated
Parents and offspring often show behavioral and physical differences
Evolution does not involve genetic changes
According to the theory of natural selection, what role do environmental pressures play?
They have no impact on the survival of traits
They randomly select traits to be passed on
They "select" traits that are suitable for survival
They ensure all traits are preserved equally
What is a key outcome of geographic barriers?
They have no effect on species
They decrease genetic diversity
They promote gene flow between populations
They lead to reproductive isolation and speciation
How did broccoli, kale, and cauliflower originate?
Through the process of convergent evolution
From a common ancestor through natural selection
Through human intervention via artificial selection or selective breeding
They appeared spontaneously without any evolutionary changes
Through the process of divergent evolution
What is the key idea of natural selection?
It is a random process without any consistency
It is the process by which traits are randomly selected by nature
It is the process by which evolutionary changes are selected by nature in a consistent, orderly, non-random way
It supports the idea that all traits are equally likely to survive
What term describes the phenomenon where many species produce more offspring than the environment can support, but only a small percentage survive into adulthood?
Speciation
Overproduction
Adaptation
Inheritance
Competition
Which of the following is an example of competition in natural selection?
Plants competing for nitrogen in the soil and sunlight
Butterflies having eye-like patterns on their wings
Hummingbirds flapping their wings to evade predators
Elephants using large ears to cool themselves
What does the term 'variation' in the context of natural selection refer to?
Traits that are detrimental to survival
Beneficial traits that are passed to offspring
The difference in traits that are inherited among a species
Traits that change based on environmental conditions
Which of the following best defines 'speciation' in biology?
Adjustment of a population to its environment
Development of beneficial traits in a niche
Evolution of populations into distinct species
Passing of traits from one generation to the next
Which example illustrates a structural adaptation in animals?
Seahorses producing many offspring
Deer competing for mates
Butterflies with eye-like patterns on their wings
Variation in inherited traits
According to Lamarck's theory, how did giraffes develop longer necks?
Through genetic mutations over generations
By stretching their necks during their lifetime which then passed to their offspring
By selective breeding
Through a gradual process of natural selection
What is the key concept of Darwin's theory of evolution?
Inheritance of acquired characteristics
Descent with modification
Use and disuse of organs
Spontaneous generation
Which of the following is NOT a component of Darwin's theory of natural selection?
Traits of the parents are passed on without being modified by the life of the parent
The fittest variants are favored by nature
Changes occur through sudden, significant mutations
Natural selection favors giraffes with longer necks
Who agreed with Darwin's views on evolution?
Lamarck
Mendel
Alfred Russel Wallace
Watson and Crick
What does the term "scientific theory" imply according to the document?
A guess or assumption without evidence
A proven fact that cannot be challenged
A system of ideas that has been confirmed by observation or experiment
A concept that is never updated or changed
Which of the following is NOT a reason for criticism of Darwin's theory of evolution as mentioned in the document?
It was seen as incomplete or outdated
It had a religious foundation
It lacked acknowledgment of inheritance
It was motivated by religious beliefs
According to the document, what role did Thomas Huxley play in relation to Darwin's evolutionary theory?
He was Darwin's main critic
He was known as "Darwin's bulldog"
He disproved Darwin's theories
He ignored Darwin's work
What is a key aspect of Lamarck's evolutionary theory as described in the document?
Organisms can pass on traits acquired during their lifetime
Natural selection is the main directive
Mutation and recombination do not cause change
Survival of the fittest is irrelevant
Which example would NOT support Lamarck's theory?
A mole using its eyes in dark tunnels
A giraffe stretching its neck to reach higher leaves
A bird developing stronger wings from frequent flying
None of the above
What term describes the concept that every part of the body transmits genes to offspring, and these genes can change if the environment affects the body part?
Epigenetics
Pangenesis
Mutationism
Lamarckism
How is epigenetics related to Lamarckism?
Both involve the inheritance of acquired characteristics.
Both reject the idea of gene regulation.
Both are based solely on genetic mutations.
Both are disproved theories in modern biology.
Which of the following is NOT a characteristic of epigenetic changes?
They can be transmitted between generations.
They are always permanent changes to the DNA sequence.
They involve regulation of gene expression.
They can result in plastic traits that vary with the environment.
What do embryological similarities among different species suggest about their evolutionary relationships?
They suggest that species with similar embryos are unrelated.
They indicate that species with similar embryological features have a common ancestor.
They show that embryological features are random and do not indicate evolutionary relationships.
They prove that all vertebrates have identical embryonic stages.
What is primarily demonstrated through the comparative study of homologous structures in different species?
The random variations in body structures.
The impact of environmental factors on physical features.
The adaptive changes species have undergone during evolution.
The consistent body structures across unrelated species.
How does the fossil record support the theory of evolution?
By showing no intermediate species between different forms.
By indicating that extinct species were similar to current forms.
By documenting systematic changes and intermediate forms through time.
By proving that older species are unrelated to current species.
What role do DNA sequence comparisons play in understanding evolutionary relationships?
They show that organisms with more DNA have evolved the most.
They indicate that DNA mutations prevent any form of evolutionary trace.
They provide evidence of shared ancestry through molecular similarities.
They demonstrate that DNA sequences are identical across all species.
What does the geographic distribution of organisms suggest about evolutionary patterns?
It suggests that organisms are randomly distributed without any evolutionary pattern.
It indicates that evolution is not influenced by geographic factors.
It shows that distribution patterns are best explained by evolution in combination with tectonic movements.
It proves that organisms evolve independently of their geographic locations.
What is the most important pigment that determines skin color in humans?
Tyrosinase
Keratinocytes
Melanin
Hemoglobin
Which cells are primarily responsible for the production of melanin?
Melanocytes
Keratinocytes
Hemocytes
Erythrocytes
Why did early human ancestors develop dark skin?
To protect against cold climates.
To produce more Vitamin D.
To protect against the damaging effects of intense equatorial sunlight.
To adapt to the migration to northern regions.
What is the popular theory for the evolution of lighter skin in humans who migrated to areas with less intense sunlight?
They needed to absorb more UVR to produce Vitamin D.
They needed to adapt to colder climates.
They needed to conserve body heat.
They needed to blend in with the snowy environment.
What did Lamarck believe caused giraffes to have long necks?
Random chance
Continual stretching to reach food
Natural selection
Genetic mutation
According to Lamarck, how were acquired traits passed to the next generation?
By genetic inheritance
They were not passed on
Through natural selection
Through use and disuse
What was the key difference between Darwin's and Lamarck's theories of evolution?
Darwin believed in use and disuse
Lamarck believed in descent with modification
Darwin's theory did not involve the modification of traits by the life of the parent
Lamarck's theory was based on natural selection
What does 'fitness' mean in the context of Darwin's theory of natural selection?
Physical strength
The ability to run fast
Suitability to environment
Intellectual capability
Mutated traits from previous generation
How did Darwin propose changes within a species occur?
Through a gradual process over time
By individuals acquiring traits during their lifetime
By divine intervention
Through sudden mutations
Gradualism is associated with...
Darwinism
Lamarckism
A parent's interaction with the environment influencing their own and their offspring's traits is associated with...
Darwinism
Lamarckism
According to Darwin's Theory of Evolution by Natural Selection, what happens to heritable traits that are beneficial for survival and reproduction in a population?
They get selected for by nature and help individuals reproduce and survive.
They have no impact on an individual's survival or reproductive chances.
They are always associated with physical strength and fighting abilities.
They are selected against and eventually disappear from the population.
What is the conflict between a trait that's great for reproduction but not so great for survival, as seen in the example of the peacock?
The trait attracts predators and can lead to the peacock's death but ultimately attracts a mate.
The trait helps the peacock to move swiftly and attract mates.
The trait has no real impact on the peacock's survival but does benefit reproduction.
The trait makes the peacock less attractive to potential mates but conversely helps to deter/frighten predators.
What is the concept of "runaway" effect as described by Ronald Fisher in the context of sexual selection?
A trait becomes less exaggerated in each generation.
A trait becomes more exaggerated in each generation due to female preference.
A trait that is beneficial for survival becomes more common.
A trait that is detrimental to survival becomes less common.
What is sexual dimorphism?
The difference in size between males and females of the same species
The process by which species females and males evolve to look more alike
The process by which species females and male evolve to look more different from each other
The similarity in mating rituals between males and females of the same species
One theory proposes that selecting for “pretty boys” isn’t just superficial and can benefit a species. Explain this theory.
The theory suggests that attractive males are more likely to be eaten by predators
The theory suggests that attractive males are less likely to find mates
The theory suggests that attractive males must have good genes to survive, thus passing on these genes to offspring
The theory suggests that attractiveness in males has no impact on the survival of the species
Who is often mistakenly credited with coming up with the concept of evolution?
Alfred Russel Wallace
Gregor Mendel
Charles Darwin
Isaac Newton
What is an example of natural selection affecting body size?
The evolution of the peppered moth
The change in body size of insects and arthropods due to oxygen levels
The smaller body size of male elephant seals
The adaptation of plants to different soil types
The increased head size of British Bulldogs
What environmental change led to the evolution of the peppered moth?
The increase in global temperatures
The decrease in atmospheric oxygen
The industrialization and the resulting pollution
The introduction of new predators
What is the main difference between natural selection and artificial selection?
Natural selection involves human preference, while artificial selection is based on environmental factors.
Artificial selection is driven by survival, while natural selection is based on human desires.
Natural selection is based on environmental pressures, while artificial selection involves human choices.
There is no difference; both terms mean the same thing.
Who first proposed the concept of punctuated equilibrium?
Charles Darwin
John H. C. Herron
Stephen Jay Gould
Scott Freeman
What does the concept of punctuated equilibrium suggest about evolutionary change?
It occurs in consistent, gradual increments.
It is marked by long periods of stability interrupted by rapid changes.
It happens only in marine organisms.
It is a disproven theory.
Which group of organisms is cited as evidence of punctuated evolution in the fossil record?
Bryozoans
Reptiles
Mammals
Amphibians
According to the theory of punctuated equilibrium, what is less likely to be found in the fossil record?
Transitional forms between species
Fossils of stable species
Fossils from marine organisms
Fossils from land organisms
Selective advantages that become helpful adaptations
What is divergent evolution?
The process where groups from the same common ancestor evolve and accumulate differences, resulting in the formation of new species.
The process where different species share the same environment and develop similar traits.
The process where species from different ancestors merge their genetic material.
The process where a single species splits into two without any genetic changes.
What can trigger divergent evolution?
Changes in abiotic factors, such as environmental conditions or new niches.
Constant environmental conditions with no changes.
Decrease in genetic variation within a population.
Lack of reproductive barriers between populations.
What is required for allopatric speciation to occur?
A reproductive barrier such as a river or mountain range that separates two groups within a population.
A new predator entering the ecosystem.
The introduction of a new disease.
Increased genetic mutation rates.
Which type of structures develop through divergent evolution?
Homologous structures
Analogous structures
Vestigial structures
None of the above
What is convergent evolution?
The process where unrelated organisms evolve similar traits as they adapt to similar environments.
The process where related organisms evolve different traits in similar environments.
The merging of species into one with similar traits.
The separation of a species into two distinct new species.
What is the primary difference between convergent and divergent evolution?
Convergent evolution involves species evolving from a common ancestor, while divergent evolution does not.
Divergent evolution involves species sharing a common ancestor and evolving different characteristics, while convergent evolution involves species that do not share a common ancestor but develop similar traits.
Convergent evolution occurs when species evolve in similar environments, while divergent evolution occurs in different environments.
Divergent evolution is about species adapting to cold climates, whereas convergent evolution is about adapting to warm climates.
What is the phenomenon of recurrent evolution towards a crab-like body plan known as?
Evolutionary regression
Carcinisation
Adaptive radiation
Morphological adaptation
Which group of animals is mentioned as having converged on the same streamlined shape to thrive in the marine environment?
Amphibians and reptiles
Birds and mammals
Sharks, cetaceans, and ichthyosaurs
Insects and arachnids
Which animals are known to have opposable thumbs?
Primates, opossums, koalas, giant pandas, and chameleons
Primates, opossums, koalas, giant pandas, and kangaroos
Primates, opossums, koalas, giant pandas, and elephants
Primates, opossums, koalas, giant pandas, and giraffes
Which animals are mentioned as using echolocation?
Whales and bats
Sharks and dolphins
Elephants and lions
Frogs and birds
What feeding strategy is suggested for Mystacodon based on fossil records?
