Sampling Techniques Flashcards
1
Q
What is a habitat?
A
A place where an organism lives
2
Q
What is the distribution of an organism?
A
Where the organism is found
3
Q
What environmental factors affect where living organisms are found?
A
Temperature Water availability Oxygen and carbon dioxide availability Amount of light Nutrients availability
4
Q
What are the two ways in which you can measure he distribution of organisms?
A
Using a quadrat
Using a transect
5
Q
How does a quadrat work?
A
Place a metre squared quadrat on the ground randomly
Count all organisms within the quadrat
Repeat steps in different areas
Work out the mean
6
Q
How do transects work?
A
Mark a kind in the area you want to study (tape measure)
Place a quadrat at regular intervals along the line and count
7
Q
How can you make results more reliable?
A
Take a larger sample size
8
Q
How do you make your results valid?
A
Control all other factors than the one you’re studying
