Chapter 6 Exam (Biodiversity)

Biodiversity refers to

• extinct species
• the variety of species on Earth
• nonrenewable resources
• the rate of species decline

Plants and animals that exist only in one geographic region. (i.e. Florida Scrub Jay)

• endemic species
• threatened species
• endangered species
• ecosystem services

Mass extinction is usually due to a large-scale natural catastrophic event.

• True
• False

Imported plants and animals in Hawaii have

• caused native species to die out.

• increased the native bird species.

• improved soil fertility

• increased crop yields

A major factor that negatively affects biodiversity is

• biological magnification.

• habitat fragmentation.

• contour plowing.

• nonrenewable resources.

The goals of biodiversity conservation include all of the following EXCEPT

• protecting individual species.

• introducing exotic species into new environments.

• preserving habitats and ecosystems.

• making sure local people benefit from conservation efforts.

The lionfish is a venomous fish found primarily in the Red Sea and the Indian Ocean. In the 1990s, lionfish were accidentally released into the Atlantic Ocean, where they found abundant resources and favorable environmental conditions. Which of the following scenarios is most likely to result in the lionfish having a major impact on the communities into which they were introduced?

• With no natural predators, the lionfish population will become very large.

• Some native species of invertebrates will develop a resistance to lionfish venom.

• Random mating will allow the lionfish population to reach Hardy-Weinberg equilibrium.

• A virus that specifically infects lionfish will become more prevalent.

Extinction describes the disappearance of a(n)____

• organism form the ecosystem.

• organism from the biosphere.

• species from the ecosystem.

• species from the biosphere.

Which term best describes this collection of locations: a lake, a forest, and an estuary?

• ecosystem diversity

• extinction

• genetic diversity

• species diversity

Which represents an indirect economic value of biodiversity?

• Food

• Flood protection

• Clothing

• medicines