Sampling teachniques

What type of population would you ESTIMATE using a quadrat?

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

These four 1m² squared quadrats were place in a 8m² garden. Estimate the total population of flowers in the whole garden.

• 16

• 17

• 8

• 40

• 20

Tags

NGSS.MS-LS2-1

Which organism can be measured with a quadrat?

• lion

• flies

• rat

• dandelion plants

• fish

What can a quadrat be used to measure?

• length

• weight

• population density

• volume

• time

Which of the following is true about quadrats?

• quadrats should be placed randomly so that a representative sample is taken

• you should look at the results from several quadrats in an area to reduce the effect of an unusual distribution

• the results are more reliable when you look at the results from many quadrats

• All the above are true

What is the best way to place a quadrat?

• Place it where you like

• Divide the sample area into a grid and use a random number generator to choose a square.

• Throw the quadrat so it's random

• Divide the sample area into a grid and choose a square.

An area of 5m² was sampled using a quadrat to find a total of 10 sunflowers. If the area of the field was 200m² , what is the estimated number of sunflowers in the field?

• 50

• 20

• 40

• 400

Tags

NGSS.MS-LS2-1

A living or once-living organisms in an ecosystem is a

• population
• biotic factor
• abiotic factor
• community

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

A non-living element in an ecosystem is an

• animal

• abiotic factor

• biotic factor

• organism

Tags

NGSS.MS-LS2-3

Tree kangaroos live in the upper branches of trees in the rainforests of Queensland, as well as on the island of New Guinea. This is an example of the tree kangaroos ___.

• niche
• habitat
• community
• population