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WorksheetsChapter 7 Review
Total questions: 10
Worksheet time: 20mins
Darwin's theory of ________ expained the process by which organisms become well-adapted to their environment
selective breeding
generation time
natural selection
A group of organisms that can mate with each other to produce offspring is known as a(n)
fossil
species
speciation
The ________ provides information about organisms that have lived in the past
evolution
fossil record
fossil
In ___________, humans select organisms with desirable traits that will be passed from one generation to another.
selective breeding
speciation
evolution
A(n) ________ helps an organism survive better in its environment.
fossil
adaptation
species
Populations of insects and bacteria can evolve quickly because they usually have a short _________.
speciation
generation time
fossil record
The fact that all organisms have DNA as thei genetic material is evidence that
all organisms undergo natural selection
all organisms may have descended from a common ancestor
selective breeding takes place every day
genetic resistance rarely occurs
Charles Darwin puzzled over differences in the ________ of the different species of Galapagos finches.
webbed feet
beaks
bone structure of the wings
eye colour
Darwin observed variations among individuals within a population, but he did not realize that these variations were caused by
interbreeding
difference in food
differences in genes
selective breeding
When a single population evolves into two populations that cannot inter-breed anymore __________ has occured
adaptation
speciation
selective breeding
