GC Bio220 Topic 5 Quiz 2017

10 Jun GC Bio220 Topic 5 Quiz 2017

uestion
• Which of the following are the most common threats to biodiversity?

A.

Habitat destruction

B.

Pollution

C.

Overharvesting

D.

All of the above

Which of the following terms best defines ecosystem management?

The measure of the variety of different versions of the same genes within individual species

Attempts to integrate sustainable ecological, economic, and social goals in a unified, systems approach

Converting once-fertile land to desert

Tourism that is ecologically and socially sustainable

Which of the following terms is the elimination of a species?

Habitat destruction

Extinction

Pollution

Genetic diversity

• Which of the terms below is defined as agreements under which property owners are allowed to harvest resources or develop land as long as habitat is conserved or replaced in ways that benefit resident endangered or threatened species in the long run?

A.

Habitat conservation plans

B.

The Clean Air act

C.

Overharvesting

D.

Gap analysis

Which of the following defines the term genetic biodiversity?

The measure of the variety of different versions of the same genes within individual species

The number of different kinds of organisms within individual communities or ecosystems

The richness and complexity of a biological community, including the number of niches, trophic levels and ecological processes that capture energy, sustain food webs, and recycle materials within this system

All of the above

Which of the following defines the term species biodiversity?

The measure of the variety of different versions of the same genes within individual species

The number of different kinds of organisms within individual communities or ecosystems

The richness and complexity of a biological community, including the number of niches, trophic levels and ecological processes that capture energy, sustain food webs, and recycle materials within this system

All of the above

Which of the following defines the term ecological biodiversity?

The measure of the variety of different versions of the same genes within individual species

The number of different kinds of organisms within individual communities or ecosystems

The richness and complexity of a biological community, including the number of niches, trophic levels and ecological processes that capture energy, sustain food webs, and recycle materials within this system

All of the above

Which of the following terms would best describe the prairie dogs or bison as an endangered species with major effects on ecological functions and whose elimination would affect many other members of the biological community?

Indicator species

Keystone species

Umbrella species

Flagship species

Explain why genetic biodiversity is important for the survival of a species.

Genetic diversity (biodiversity) is the total number of genetic characteristics that is found in the genetic make up of a species. Genetic biodiversity plays a crucial role in the survival of a species. This is because it makes a species capable of adapting to suit itself to the new environments that they may find themselves in. When the habitat of a species changes, it may be required of the species to change or, risk death. The ability of the species to change will determine whether the species will be able t cope with the new environment and the challenges it comes with. The adaptability of the species will be determined by its genetic biodiversity.

Which of the following terms is a species that is considered to be in imminent danger of extinction?

Threatened species

Endangered species

Vulnerable species

None of the above