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Worksheets7.13C Exploring Natural and Artificial Selection
Total questions: 10
Worksheet time: 5mins
What is natural selection?
The process by which humans breed plants and animals for desired traits
The process by which organisms better adapted to their environment tend to survive and produce more offspring
The process of creating new species through genetic engineering
The random change in allele frequencies in a population
Which of the following is an example of artificial selection?
Wolves hunting in packs
Farmers breeding cows to produce more milk
Birds migrating south for the winter
Fish developing camouflage to avoid predators
Explain how natural selection can lead to evolution.
Natural selection causes immediate changes in an organism's DNA.
Natural selection results in the survival of the fittest individuals, leading to gradual changes in the population over time.
Natural selection eliminates all weak individuals, leaving only the strong ones.
Natural selection creates new species overnight.
Identify the main difference between natural and artificial selection.
Natural selection is a random process, while artificial selection is guided by humans.
Natural selection occurs only in plants, while artificial selection occurs only in animals.
Natural selection is faster than artificial selection.
Natural selection requires human intervention, while artificial selection does not.
Why might a farmer choose to use artificial selection on their crops?
To increase the genetic diversity of the crops
To produce crops with specific desirable traits, such as larger fruit or pest resistance
To allow the crops to evolve naturally without interference
To decrease the yield of the crops
Consider a population of beetles where some are green and some are brown. Birds prefer to eat green beetles. Over time, what is likely to happen to the population of beetles?
The population will remain the same.
The population will have more green beetles.
The population will have more brown beetles.
The population will become extinct.
A scientist observes that a certain plant species has developed resistance to a particular herbicide over several generations. What process is most likely responsible for this change?
Artificial selection
Natural selection
Genetic drift
Mutation
How does artificial selection differ from genetic engineering?
Artificial selection involves direct manipulation of DNA, while genetic engineering does not.
Artificial selection is a natural process, while genetic engineering is not.
Artificial selection involves choosing parents with desired traits, while genetic engineering involves directly altering the genetic material.
Artificial selection is faster than genetic engineering.
Which of the following scenarios best illustrates the concept of "survival of the fittest"?
A lion hunting a zebra
A plant developing deeper roots in response to drought conditions
A bird building a nest
A fish swimming upstream
What role does variation play in natural selection?
Variation decreases the chances of survival for a species.
Variation provides the raw material for natural selection to act upon, allowing some individuals to survive and reproduce more successfully.
Variation is not important in natural selection.
Variation ensures that all individuals in a population are identical.
