Ecosystem Populations

In any ecosystem, organisms interact with biotic and abiotic parts of the environment. As a result of all of the interactions, the matter within the system is

• produced when plants grow.

• recycled when organisms die.

• lost when animals and plants die.

• formed when new animals are born.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The nonliving physical environment of an ecosystem is the __________ component.

• abiotic

• biotic

• diverse

• living

Tags

NGSS.MS-LS2-3

Look at each picture carefully. Decide if the picture shows a population or a community.

The deer in the forest.

• Population

• Community

Tags

NGSS.MS-LS2-1

The non-living parts of an organism's environment are called...

• community

• biotic factors

• habitat

• abiotic factors

Tags

NGSS.MS-LS2-3

Choose the correct levels of Organization from lowest to highest...

• population, community, ecosystem, organism

• organism, population, community, ecosystem

• organism, population, ecosystem, community

"a randomly selected square plot marked in an ecosystem. Organisms are counted, and the average number in each plot is taken, then an estimate of population can be calculated" Name this population counting method.

• Capture-Recapture

• Quadrats

• Averaging

• Random selection

animals are captured and marked before being released. Several days later, animals are captured again before an estimate of population is calculated. Name this population counting method

• Quadrats

• Random selection

• Capture-Recapture

• Averaging

Which of the following accurately describes the difference between capture-recapture and quadrat sampling?

• Quadrat sampling is used for mobile populations and capture-recapture is used for stationary populations

• Quadrat sampling is used for stationary populations and capture-recapture is used for mobile populations

• Quadrat sampling can only be used for small populations

• Capture-recapture sampling can only be used for small populations

Look at the picture carefully. Decide if the picture shows a population or a community.

• Population

• Community

Tags

NGSS.MS-LS2-1

A community is a level in organization that is....

• made of populations of different species that live in the same place and interact.

• a single individual species of organisms that are similar.

• all the individual organisms of the same species in the same place.