Ecological sampling using quadrats.

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

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

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

• 100%

• 25%

• 50%

• 75%

Tags

NGSS.MS-LS2-1

Which organism can be measured with a quadrat?

• lion

• flies

• rat

• barnacles

• fish

Which of the following reasons explains why grass grows abundantly in a field but not in a wood?

• The woodland animals have eaten all the grass

• The wood will be too sheltered from the wind

• There is a higher light intensity in the field for photosynthesis

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-4

How can a representative sample of the plant species growing in a field be obtained?

• By randomly placing a quadrat at many different locations around the field

• By randomly placing many quadrats in one corner of the field

• By placing one quadrat at a random location in the field

Temperature is measured using a...

• Light meter

• pH meter

• Thermometer

• Moisture meter

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Light intensity is measured using a...

• Light meter

• pH meter

• Thermometer

• Moisture meter

Quadrats are used to estimate the number of...

• Large animals

• Plants, lichen and slow-moving animals

• Insects

• Plants only

Random sampling is used to estimate a population of a species in a habitat. Which of these is NOT correct?

• We can just chuck the quadrat where we want to sample

• We must choose coordinates randomly to avoid being biased in our results

• We must take multiple readings and calculate a mean number

• This method only really works for plants and (very)slow moving animals