Unit 3: Population Sampling

When a population needs to be estimated scientists:

• count every individual

• randomly guess the population

• sample the population and use math to estimate

When scientists wish to sample plant populations they use:

• Quadrat Random Sampling

• Transects

• Mark and Recapture

When scientists wish to sample animal populations they use:

• Quadrat Random Sampling

• Transects

• Mark and Recapture

Populations change due to (a)   deaths, immigrations and emigration.

True or false: The populations within an ecosystem never change.

• True

• False

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

True or False: Probability is involved in population sampling, like the probability of catching a tagged fish.

• True

• False

True or False: When a population is uniform in its distribution Quadrat Random Sampling works best.

• True

• False

True or False: When a population is clumped it is best to use Transects to sample the population.

• True

• False

The population of plants can be estimated by:

• Mark and Recapture

• Quadrat Random Sampling

• Transects

Tags

NGSS.MS-LS2-1

The population of FAST MOVING animals can be estimated by:

• Mark and Recapture

• Quadrat Random Sampling

• Transects

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4