Quiz about Biodiversity Assessment

Question 1

True or false: An ecosystem with high genetic diversity is healthier than an ecosystem with low genetic diversity.

Accepted Answer

True

Answer

False

Question 2

Species richness is

Accepted Answer

the total number of different species found in an ecosystem

Answer

a measure of how all of the individual organisms in an ecosystem are balanced between the different species.

Question 3

Which community has higher species evenness?

Accepted Answer

Community A

Answer

Community B

Question 4

Which island would be the most biodiverse?

Accepted Answer

Large island close to the mainland

Answer

Small island far from the mainland

Answer

Small island close to the mainland

Answer

Large island far from the mainland

Question 5

A solution to habitat fragmentation is

Accepted Answer

building wildlife corridors

Answer

building ecosystem ladders

Answer

building more zoos

Answer

building more islands

Question 6

What is a keystone species?

Accepted Answer

A species that helps to hold an ecosystem together

Answer

A keystone isn't a living thing, it's just a stone

Answer

Keys and stones have nothing to do with ecology

Answer

A species that lives in or around rocks

Question 7

A drought has hit this grassland biome. How will this effect the rabbit population?

Accepted Answer

The rabbit population will decrease.

Answer

The rabbits will increase in number.

Answer

The rabbit population will stay the same.

Answer

The rabbit population will become extinct immediately.

Question 8

Which organisms in the food web shown to the right are predators that compete for the same prey in this environment?

Accepted Answer

Bobcats and coyotes

Answer

Coyotes and rabbits

Answer

White-tailed deer and rabbits

Answer

Leafy weeds and cotton rats

Question 9

Why is it important to conserve the biodiversity of Earth?

Accepted Answer

to increase the stability of ecosystems during environmental changes

Answer

to decrease the amount of global predator populations

Answer

to decrease the stability of major global ocean currents

Answer

to increase the amount of nonrenewable resources located in the lithosphere

Question 10

Biodiversity can include genetic diversity within a population or variation of populations within an ecosystem. Given this information, which of the following is likely to have the MOST biodiversity?

Accepted Answer

a tropical forest

Answer

an arctic tundra

Answer

a deciduous forest

Answer

a residential backyard

Question 11

How could a global decrease in plant diversity affect the biosphere?

Accepted Answer

It could cause a decrease in animal populations in the biosphere.

Answer

It could cause an increase in the amount of oxygen gas available for plants and animals.

Answer

It could cause an increase in animal diversity in the biosphere.

Answer

It could cause a decrease in the amount of water available for plants and animals.

Question 12

Which action will most likely cause a negative impact on the biodiversity of a small region?

Accepted Answer

draining a wetland for the development of a new park

Answer

planting native species in a bare field to attract wildlife

Answer

reducing the amount of pesticides and fertilizers used

Answer

having a controlled burn to remove undergrowth of a forest

Question 13

Biodiversity refers to

Accepted Answer

the variety of species on Earth

Answer

extinct species

Answer

nonrenewable resources

Answer

the rate of species decline

Question 14

1. What makes a species invasive?

Accepted Answer

Moving to a new ecosystem and taking resources from natives

Answer

Not having papers

Answer

Species that can't adapt

Answer

Plants that take up too much space

Question 15

A species is defined as endangered when it

Accepted Answer

all of the above

Answer

suffers from damage to its habitat.

Answer

suffers from disease or predation.

Answer

when there are hazards to the continued life of the species.

Question 16

What are the greatest problems facing plants, animals, and people?

Accepted Answer

all of the above

Answer

introducing new species that  can cause problems

Answer

habitat destruction

Answer

illegal hunting

Question 17

The primary causes of extinction (and endangerment and threatened status) is...

Accepted Answer

habitat loss and degradation

Answer

polar ice cap melting

Answer

global warming

Answer

burning of fossil fuels

Question 18

How does habitat fragmentation reduce genetic diversity in species?

Accepted Answer

Habitat fragmentation isolates a large population into smaller groups.

Answer

Habitat fragmentation makes nonnative species introduction possible.

Answer

Habitat fragmentation opens migration routes.

Answer

Habitat fragementation encourages open gene flow.

Question 19

The loss of a natural habitat is called?

Accepted Answer

Habitat destruction

Answer

Habitat development

Answer

biodiversity

Answer

Pollution

Question 20

The number of different species in an area is referred to as its _______________.

Accepted Answer

biodiversity

Answer

population

Answer

genetic diversity

Answer

Niche diversity

Question 21

The loss of habitat

Accepted Answer

habitat destruction

Answer

pollution

Answer

poaching

Answer

habitat fragmentation

Question 22

What is the variety of genes present?

Accepted Answer

genetic diversity

Answer

bidiversity

Answer

species diversity

Answer

extinction

Question 23

The number of different species and the abundance of each species in a biological community.

Accepted Answer

species diversity

Answer

genetic diversity

Answer

ecosystem diversity

Answer

extinction

Question 24

The breaking of habitats into smaller pieces is called...

Accepted Answer

habitat fragmentation

Answer

habitat division

Answer

habitat pollution

Answer

habitat corruption

Question 25

In what part of the world are the greatest number of extinctions occurring?

Accepted Answer

in tropical rain forests

Answer

in deserts

Answer

in the Arctic

Answer

in Europe and the United States

Question 26

An endangered species is

Accepted Answer

a species in danger of extinction

Answer

a plant growing on public land

Answer

an organism brought to a place where it has not lived before

Answer

a species that has disappeared entirely

Question 27

How do people benefit from biodiversity?

Accepted Answer

all of these

Answer

aesthetic or personal enjoyment

Answer

variety of food sources

Answer

source of new products

Question 28

Preserving entire ecosystems rather than individual species is a good conservation strategy because

Accepted Answer

more than one species can be saved

Answer

only endangered species will be saved

Answer

developers will have greater access to land

Answer

it will not be necessary for environmentalists to study the ecosystem

Question 29

Where are many critical biodiversity hotspots located?

Accepted Answer

islands, tropical rain forests, and coastal areas

Answer

cities and developed areas of the world

Answer

desert and polar environments

Answer

all of the these

Question 30

What human activities have influenced recent extinction events?

Accepted Answer

all of these

Answer

habitat destruction

Answer

overharvesting

Answer

introducing non-native species (competition)

Biodiversity Assessment

30 questions

True or false: An ecosystem with high genetic diversity is healthier than an ecosystem with low genetic diversity.

Species richness is

Which community has higher species evenness?

Which island would be the most biodiverse?

A solution to habitat fragmentation is

What is a keystone species?

A drought has hit this grassland biome. How will this effect the rabbit population?

Which organisms in the food web shown to the right are predators that compete for the same prey in this environment?

Why is it important to conserve the biodiversity of Earth?

Biodiversity can include genetic diversity within a population or variation of populations within an ecosystem. Given this information, which of the following is likely to have the MOST biodiversity?

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