Investigating: Quadrats and Transects

Which quadrat is the largest?

• $0.25m^2$

• $1m^2$

• $2m^2$

• $0.5m^2$

Under which conditions would you use a belt transect? (select all that apply)

• When the light intensity is the same everywhere

• When the area changes from shade to full sunlight

• In an area that gradually changes from dry to wet

• Underwater

A  $40m^2$  field was sampled using a  $1m^2$  quadrat. There were an average 2 dandelions per quadrat. Estimate how many dandelions there are in the whole field.

• 40

• 20

• 80

• 2

How should quadrats be placed in a field?

• Randomly

• Where the organism you are investigating is present

• Along the edges of the field

What is the area of a field 10m wide and 15m long?

•  $15m^2$  

• 
  

   $150m^2$ 

•  $1500m^2$  

•  $100m^2$  

Temperature, light intensity and water are all _____ parts of the environment

• alive

• biotic

• abiotic

• living

In the image, the white square is called the:

• quadrat

• transect

• square measure

• counter

In the image, the line is called the:

• quadrat

• transect

• stabiliser

• water

Why would you randomly sample using a quadrat rather than counting every organism you are investigating?

• It would be quicker to count all of the organisms

• The organisms are too small to count

• It is quicker, cheaper and easier to use the quadrat

• It would be more fun to sample with a quadrat

You are investigating buttercups growing underneath a tree. What do you predict would happen to the number of buttercups as you move from under the tree towards the sunshine?

• There will be more buttercups under the tree than in the sunshine

• The number of buttercups will be the same everywhere

• More plants will grow in the sunshine than in the shade of the tree