Free Printable 7.1 + 7.2 Biodiversity

Worksheets

7.1 + 7.2 Biodiversity

Total questions: 20

Worksheet time: 12mins

Name

Class

Date

Keystone species is

A species that is endangered

A species that influences the survival of many other species in an ecosystem

A species that emigrates from an ecosystem

A species that does not help the ecosystem

The contamination of earths land, water, or air is called?

population

Sustainable yield

point source

pollution

If fish are caught faster than they can breed the population will _____________

increase

stay the same

emigrate

decrease

Yellowstone National Park is an example of?

Habitat destruction

Habitat fragmentation

Habitat preservation

If all the members of a species disappears from Earth, the species is said to be?

Threatened

Endangered

Extinct

Keystone species

The loss of a natural habitat is called?

Habitat development

biodiversity

Pollution

Habitat destruction

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

population

genetic diversity

biodiversity

Niche diversity

The natural factors that affect biodiversity are?

Poaching, pollution, introducing exotic species, habitat destruction

Captive breeding, laws/treaties, habitat preservation

Climate, area, diversity of niches, genetic diversity, and extinction of species

In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?

There would be an overpopulation of arctic hares and lemmings.

Polar bears would move to a new ecosystem

The ecosystem would collapse because it lost its main producer

Wildflowers would die out from the ecosystem

10.

Globally, the leading cause of biodiversity loss is

invasive species

poaching and overharvesting

pollution

habitat change and loss

11.

Biotic factors...

are living things like plants and animals

need abiotic factors to survive- like water and sunlight

include fungi and bacteria

all of these are true

12.

Abiotic factors are...

living organisms, like plants and animals

dead things, like a tree that died and fell to the ground

non-living things, like rocks, water, and temperature

all of these are true

13.

What two abiotic factors most affect the biodiversity of a biome?

oxygen and water

temperature and rocks

rain and snow

water and temperature

14.

What is shown by the image?

Habitat Fragmentation

Primary Succession

Biomagnification

Conservation

15.

A non-native species that is harming the ecosystem into which it was introduced is called:

Biomagnification

Invasive Species

Extinction

Habitat Fragmentation

16.

Which of the following increases the biodiversity of the ecosystem?

Conservation

Pollution

Sustainability

Acid Rain

17.

The trend of increasing global temperature is known as ___?

Global Warming

Greenhouse Effect

Ecological Footprint

18.

Building land bridges and tunnels decreases the effect of ___.

Unsustainable Logging

Habitat Fragmentation

Ecological Impacts

Mechanical Control

19.

Which of the following human activities reduces biodiversity?

prohibiting hunting in wildlife reserves

taking tissue samples from members of an endangered species

planting only native grass species to prevent erosion beside highways

global deforestation for wood resources

20.

This biome has lots of biodiversity and high rainfall.

Desert

Tropical Forest (Rainforest)

Boreal Forest

Grassland (Savannah)

Mountain

Reset

7.1 + 7.2 Biodiversity

Total questions: 20

Worksheet time: 12mins

Similar Resources on Wayground