Chapter 3: Species Diversity

What is Mayr's definition of a species?

• Groups of organisms that share the same habitat

• Groups of interbreeding natural populations

• Groups of organisms that are extinct

• Groups of genetically identical organisms

How many described species are estimated to exist?

• 1.7 million

• 3.6 million

• 13.6 million

• 111.7 million

Which of the following is an example of a cryptic species?

• Brown bears

• Alpine lily

• Astraptes fulgerator butterfly

• American black bears

What percentage of species is estimated to await description?

• 90%

• 50%

• 75%

• 86%

What is the intrinsic value of a species?

• Its value independent of other species

• Its role in an ecosystem

• Its economic importance

• Its recreational value

Which category of rarity refers to species found only in specific habitats?

• Natural rarity

• Local population size

• Habitat specificity

• Geographic range

What is one example of a wild food source mentioned?

• Bushmeat markets

• Cattle farms

• Aquaculture

• Greenhouses

Which of the following is a modern example of a medicinal plant?

• Willow bark

• Foxglove

• Pacific yew

• Silphion

What is the significance of the Astraptes fulgerator butterfly?

• It is endangered

• It has no known distinct species

• It revealed multiple distinct species

• It is a common species

Which of the following is NOT a value of species mentioned?

• Scientific value

• Cultural value

• Political value

• Economic value