SCI6 T2 REVIEW - Ecosystems

SCI6 T2 REVIEW

ECOSYSTEMS

Fill in the Blanks

all the living things and nonliving things in a given area (E)

Multiple Choice

All the individuals of the same species living in the same area make up a ____.

• population

• community

Multiple Choice

All the living things in the same area make up a ____.

• population

• community

Multiple Choice

Which of the following is a biotic factor?

• soil

• plant

• water

Multiple Choice

release of water vapor from the stems and leaves of plants

• evaporation

• transpiration

• condensation

• precipitation

Multiple Choice

water that falls from clouds to Earth

• evaporation

• transpiration

• condensation

• precipitation

Multiple Choice

Which process releases oxygen to the atmosphere?

• photosynthesis

• cellular respiration

Multiple Choice

Bacteria in the soil convert nitrogen in the air to forms that plants can use.

• TRUE

• FALSE

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relationship between two kinds of organisms that lasts over time is (S)

Multiple Choice

one organism benefits while the other neither benefits nor is harmed

• mutualism

• commensalism

• parasitism

Multiple Choice

occurs when there is a limited supply of resources

• competition

• predation

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a species’ role in the community (N)

Multiple Choice

Which part of the Earth receives more sunlight?

• closer to the equator

• closer to the poles

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a region that has a particular climate and contains certain types of plants and animals (B)

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a layer of permanently frozen soil (P)

Multiple Choice

Russian for "forest"

• tundra

• taiga

• desert

• rain forest

Multiple Choice

driest biome; receives the least precipitation

• tundra

• taiga

• desert

• rain forest

Multiple Choice

All deserts are hot.

• TRUE

• FALSE

Multiple Choice

grasslands of Argentina

• prairies

• steppes

• pampas

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trees with leaves that fall off before winter (D)

Multiple Choice

In deciduous forests, leaves fall off trees to reduce transpiration.

• TRUE

• FALSE

Multiple Choice

home to more species than the other land biomes

• tundra

• taiga

• desert

• rain forest

Multiple Choice

areas in which water is near the surface of the soil much of the time

• ponds and lakes

• streams and rivers

• wetlands

• estuaries

Multiple Choice

water does not appear to move

• ponds and lakes

• streams and rivers

• wetlands

• estuaries

Multiple Choice

important breeding grounds for birds and act as natural water filters and sponges

• ponds and lakes

• streams and rivers

• wetlands

• estuaries

Multiple Choice

In which ecosystem do plants and animals need adaptations that help them survive the variations in salt content, or salinity?

• ponds and lakes

• streams and rivers

• wetlands

• estuaries

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organisms that live on or near the ocean floor (B)

Multiple Choice

Aquatic food chains begin with plankton.

• TRUE

• FALSE

Multiple Choice

open ocean past the continental shelf

• intertidal zone

• neritic zone

• oceanic zone

Multiple Choice

Which of the following is an abiotic limiting factor?

• predators

• water

• invasive species

Multiple Choice

What happens when the predator population increases?

• The prey population increases.

• The prey population decreases.

Multiple Choice

species that is close to becoming extinct

• threatened

• endangered

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wide variety of life on Earth (B)

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gradual replacement of one community by another (S)

Multiple Choice

occurs in an area where a community previously existed

• primary succession

• secondary succession

Multiple Choice

first species to move to a lifeless area

• pioneer species

• intermediate species

• climax community

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remains of dead organisms (F)

Multiple Choice

Homologous structures suggest that two species have a common ancestor.

• TRUE

• FALSE