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WorksheetsMrs Disney Y11- Biology Field work
Total questions: 20
Worksheet time: 17mins
What is a square called that we use to sample populations?
grid
quadrat
cube
quarter
Limpets were found in 25 out of 50 quadrats. What percentage of quadrats contained limpets?
100%
25%
50%
75%
What type of population would you ESTIMATE using a quadrat?
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
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
Which organism can be measured with a quadrat?
lion
flies
rat
dandelion plants
fish
Which organism can be measured with a quadrat?
deer
butterfly
mouse
snail
fish
Can a quadrat be used on a large land organism that moves around in a herd?
yes - use a quadrat
no - you can't use a quadrat
What can a quadrat be used to measure?
length
weight
population density
volume
time
A quadrat can be used to find the _______ of an organism in an area
length
weight
frequency
volume
time
This 1m2 squared quadrat was place in a 3m2 beach. Estimate the total population of crabs in the whole beach.
15
12
18
6
5
What is a suitable way to sample plants in a field?
Counting Random Plants
Using Quadrats
Using Pooters
Using Pitfall traps
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 a suitable way to sample small invertebrates living on the ground.
Quadrats
Sweep nets
Pitfall traps
Water Sampling
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
When sampling organisms in a certain area using a quadrat you also need to know...
Area of the quadrats
Sum of area covered by quadrats and the field
Area of the field & area covered by quadrats
Area of the field
What is a Belt Transect?
A way of sampling a changing habitat
A way of sampling a non-changing habitat
A way of keeping up your pants
When sampling daisies how will amount of light affect them?
Less Light = More Daisies
More Light = Less Daisies
More Light = More Daisies
Less Light = More Grass
