Organisms and their environment Flashcards
1
Q
Some factors that might affect where organisms live…
A
Temperature Amount of light Availability of water Availability of nutrients Availability of oxygen and carbon dioxide. Predetors
2
Q
Two ways to collect quantitative data?
A
Transects and Quadrents
3
Q
What is a transect?
A
A transect is a line across a habitat or part of a habitat.
4
Q
What does a transect measure?
A
The number of organisms of each species can be observed and recorded at regular intervals along the transect.
5
Q
What is a quadrant?
A
A quadrat is usually a square made of wire.
6
Q
When using a quadrant…
A
It should be placed randomly so that a representative sample is taken
The validity and reproducibility of the results increases as the results from more quadrats are analysed
