A biological speciesa. always looks different from other species.b. always has a different chromosome number than other species.c. is reproductively isolated from other species.d. never occupies the same ecological niche as other species.

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Which of the following statements is false? a.   Gradual speciation is most likely to occur in a large population that lives in a stable climate. b.   Punctuated equilibrium is unlikely to occur in a large population that lives in a stable climate. c.   Gradual speciation and punctuated equilibrium both result in the divergence of species. d.   Gradual speciation is most likely to occur in a small population that experiences a rapid change in its environment.

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The Biological Species Concept (BSC) is probably the most widely used of the concepts but it does have some problems. Which of the following are flaws or weaknesses of the BSC? A. The BSC cannot be used to identify species that do not reproduce sexually B The BSC cannot be tested C. The Bsc cannot be used on fossil species  D. All of the above E A and C only

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Fruit flies of the genus Drosophila are distributed worldwide, but 30-40% are found on Hawaiian islands. How can you explain this distribution pattern? I’m addition, most species that have been identified are almost indistinguishable from other species and yet vary few hybrids have ever been observed. How might this phenomenon be explained?

Think about the ways we define/identify a species. What would the least precise way to determine a living species (so not extinct)? O groups of organisms that look alike O groups of organisms that are geographically separated for a significant period of time such that they become distinct genetically separate populations with different genetic markers groups of potentially interbreeding populations with are reproductively isolated from others

Which of the following is a characteristic of species found on oceanic islands? Group of answer choices A. they are often found nowhere else but are close relatives of species on continents B. they are widespread species found over most of the earth C.they are very large and not able to swim D. they are completely unique and not closely related to other species elsewhere

In terms of classification of organisms, it can be said that the living things on Earth are very A. dangerous B. deceptive C. developed D. diverse. The next lower level of classification, immediately following phylum is A. kingdom B. order C. class D. species.  The next higher level of classification, immediately following family is A. species B. genus C. class D. order. Human beings are called Homo sapies; here, “Homo” represents A. genus B. species C. class D. kingdom. Organisms belonging to the same species usually interbreed with one another. Exceptions to this can be found in some A. reptiles B. mammals C. plants D. vertebrates