Biodiversity and Community Ecology

_____ species is a non-native plant/animal introduced accidentally or intentionally by humans 

• extinct
• endangered
• threatened
• invasive (exotic) 

Which of the following forbids the U.S. government and its citizens from harming endangered or threatened species and their habitats?

• the Environmental Protection Agency
• Species Survival Plan
• the Endangered Species Act
• The Convention on International Trade in Endangered Species

The number of species in a given area is known as _____________________.

• species evenness
• species richness
• species pieces
• species swag

The measure of whether a particular ecosystem is numerically dominated by one species or are all represented by similar numbers of individuals is known as _______________.

• species richness
• species evenness
• species pieces
• species set

Which of the following communities is more species rich?
 

• Community 1
• Community 2
• Species richness is the same in both communities.
• Community 3

Which of the following communities is more evenly distributed?
 

• Community 1
• Community 2
• Species evenness is the same in both communities.
• Community 3

_________________ occurs when a large numbers of species goes extinct over a relatively short period of time.

• Extirpation
• Extinction
• Mass Extinction
• Mass Effect

Human threats to biodiversity include:

• Habitat destruction
• Pollution
• Population growth
• All of the above

The process in which humans determine which individuals breed, typically with a preconceived set of traits in mind, is called:

• macroevolution
• random mating
• artificial selection
• natural selection

The process in which the environment determines which individuals survive and reproduce is called:

• environmental selection
• selective pressure
• artificial selection
• natural selection