Populations & Communities Test Review

Many natural ecosystems change through secondary succession. Which of the following describes an ecosystem in which a secondary succession will most likely occur?

• a coastline newly formed from erupted lava

• an island where rain showers occur most afternoons

• a forest partly burned by wildfire caused by a lightning strike

• a hillside where all the soil and organisms were removed for mining

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

In some grassland ecosystems, lions are predators that consume zebras. In several estuary ecosystems, fish lice are parasites that consume the blood of fish. How are these two relationships of predation and parasitism from different ecosystems similar?

• Only one organism in each relationship dies.

• Both organisms in each relationship are harmed.

• Only one organism in each relationship benefits.

• Neither organism in each relationship is harmed

Tags

NGSS.MS-LS2-2

Cheetahs are endangered, predatory mammals that live in sub-Saharan Africa. Which of the following are reasons that animals become endangered? Choose the THREE that apply.

• too much biodiversity

• low genetic diversity

• loss of habitat

• abundant resources

• environmental changes

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following determines whether an ecosystem is healthy?

• a food web with several members

• the number of individuals of one species in an area

• the variety of organisms/species in an area

• few natural resources

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-5

All of the following are ways to protect biodiversity EXCEPT

• Creating international laws & treaties

• Setting aside land (habitat preservation)

• Hunting a species to extinction

• Captive breeding programs

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Northern Pike are non-native predators of native fish in Washington State. They have been introduced illegally and established populations in eastern Washington. Another name we discussed for “non-native” species such as the Northern Pike is:

• Illegal species

• Invasive species

• Non-natural species

• Outlaw species

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

In which forest would you need to use more chemicals to control disease and pests?

• a forest made up of mostly Douglas firs

• a more diversified, old growth forest with many different species of trees

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Select three ways that seeds are brought into an area:

• wind

• mountains

• water

• animals

What factors affect biodiversity? (hint: look in your NOTES!!)

• Niche diversity

• Genetic diversity

• Extinction

• All of the above

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-5

NGSS.MS-LS4-4

What is the first step in the succession of an ecosystem?

• Thin soil accumulates and seedlings emerge from the soil.

• A mature community of meadow plant and animal populations becomes established.

• A volcano spews lava onto the surface of the Earth. The lava cools & forms new rock.

• Lichen and moss grow on the rock surfaces and start dissolving the rocks.

Tags

NGSS.MS-ESS2-2