distribution of organisms Flashcards
1
Q
which six physical factors affect organisms
A
temperature availability of nutrients amount of light availability of water availability of oxygen and carbon dioxide
2
Q
what is a quadrat
A
these are square frames, used to mark off specific areas of ground, they are 0.5m x 0.5m
3
Q
which two methods can be used to collect quantitative data on the distribution of organisms
A
random sampling using a quadrat or sampling along a transect
4
Q
how can you make sure you place the quadrats at random
A
using a calculator to produce random numbers
5
Q
why should a large sample size be used when sampling data
A
so that the results will be more valid (you can calculate a mean, identify anomalies and look for patterns)
6
Q
what is another term for living factors
A
biotic
7
Q
what is another term for non living factors
A
abiotic
