Exam 11: Biodiversity: Preserving Species

You also mentioned to your friend that a new tool, DNA sequencing technology, is radically changing the way species are identified. In fact, some groups that were originally thought to be far apart now seem to be closely related. Which of the following statements does not reflect the implications of using this new tool?

If you have an aquarium with saltwater fish, 75 percent of your fish probably came from

Conservationists and wildlife managers use gap analysis to

An important drug for treating Hodgkin's disease was discovered in a periwinkle native to ______ and is valued at approximately _________ per year.

Barred owls have become a threat to spotted owls because they

Which of the following is NOT a benefit of biodiversity for humans?

Exotic species introductions have had a significant impact on biodiversity.

Carp species were introduced to the United States

In this scenario, which communities have the same species evenness?

Introduced disease causing organisms are especially dangerous to new environments because they can destroy the non-native host. This happens because the disease causing organisms

Humans have domesticated nearly all the plant species that could contribute to human food production.

The total number of living species is probably

Extinction is the term used when all members of a species

Which of the following is FALSE regarding CITES?

We are usually referring to species diversity when we talk about biodiversity. However, genetic diversity is also important to ecological systems because diverse genes

The U.S. Endangered Species Act officially expired in

Island ecosystems are extremely susceptible to invasive species.

The largest contributing factor for the current high rate of animal extinctions is

In general, funding for recovery programs is given to species that are

The main reason for continued trade in endangered species is