Populations in Ecosystems

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

All of the animals in the rain forest.

• Population

• Community

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

Water, Sunlight, Oxygen and Soil are all parts of an organisms ______________ environment.

• biotic

• abiotic

• living

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

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.

If I wanted to know how many blades of grass are inside the track, which sampling method could I use?

• count every blade of grass

• Mark a random number of blades of grass, return two days later and recapture the blades

• Divide the grassy area into 1 inch sections, randomly pick several sections to count, average them together and multiply that by the total square inches.

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