Living Systems

Which ecosystem has lifeforms most similar to those of the ocean?

• estuary

• lake

• pond

• swamp

How are all ecosystems similar to forest ecosystems?

• All ecosystems have plenty of trees for consumers to eat.

• All ecosystems provide nutrient-rich soil for the producers.

• All ecosystems provide diverse populations of small animals that consumers can eat.

• All ecosystems have an appropriate amount of sunlight to support the producers living there.

An ecologist is comparing two different ecosystems and creates the following list of similarities:

--aquatic

--diverse fish life

-- high salt concentration

--plentiful light at the water’s surface

Which two ecosystems was the ecologist most likely comparing?

• ocean and lake

• estuary and ocean

• grassland and pond

Which animal would you most likely find in a deciduous forest?

• bison

• deer

• duck

• panther

Which is most similar between an ocean water ecosystem and a pond water ecosystem?

• the variety of organisms

• the amount of space available

• the type of nutrients available

• the climate and daily temperature

Plants in a forest need to obtain nutrients from the soil to survive. How do MOST of the nutrients get back in the soil once the forest plants have used them for growth?

• Organic matter is recycled from dead organisms.

• Commercial fertilizers are applied by humans.

• Solar radiation reaches the ground surface.

• Rainwater drips off of living organisms.

Tags

NGSS.MS-LS2-3

Bacteria are released into the Gulf of Mexico to help clean up an oil spill. What role do the bacteria serve in the marine ecosystem?

• decomposers

• consumers

• producers

• predators

Tags

NGSS.MS-LS2-3

Which organism is best classified as a consumer?

• worm

• algae

• human

• mushroom

Which group of organisms are consumers?

• bacteria, fungi, and mushrooms

• cactus, fern, and maple tree

• deer, rabbit, and squirrel

• moss, protist, and algae

Tags

NGSS.MS-LS2-2

Which best describes how decomposers help support life in an ecosystem?

• Decomposers provide a habitat in the ecosystem.

• Decomposers add producers to the ecosystem.

• Decomposers provide energy for consumers.

• Decomposers add nutrients to the soil.

Tags

NGSS.MS-LS2-3