Sampling Techniques 2 GCSE CEB

What is the square frame called that we use to sample populations?

• grid

• quadrat

• quarter

• quadrant

Which population would you ESTIMATE using a quadrat?

• 
• 
• 
• 

Limpets were found in 25 out of 50 quadrats. What percentage of quadrats contained limpets?

• 100%

• 25%

• 50%

• 75%

Tags

NGSS.MS-LS2-1

Ten 1m² quadrats were placed in a 40m² field. On average 2 snails were found in every quadrat. Estimate the population size of the whole field.

• 2

• 10

• 40

• 80

• 20

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

These four 1m² squared quadrats were place in a 8m² garden. Estimate the total population of flowering plants in the whole garden - you first need to work out the mean number of plants per quadrat.

• 16

• 17

• 8

• 40

• 20

The size of which population 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

A non-living element in an ecosystem is an

• animal

• abiotic factor

• biotic factor

• organism

Tags

NGSS.MS-LS2-3

Which row in the table shows the correct piece of equipment for measuring each abiotic factor

• Row A

• Row B

• Row C

• Row D