additional biology-distrubution of organisms Flashcards
1
Q
what is a habitat
A
where an organism lives
2
Q
what environmental effects can affect where an organisms is found
A
- temperature
- water
- oxygen and co2
- light
3
Q
name two ways you can study the distribution of an organisms
A
- measure how common the organism is in two areas
- study the change in the area
4
Q
what is a quadrat
A
a square frame that encloses an area
5
Q
how do you use a quadrat
A
- place it on the ground at a random point
- count all organisms within the quadrat
- repeat
- work out the mean
6
Q
how do you work out the population size
A
mean x total area
7
Q
what is a transect
A
a tape measure
8
Q
how do you use a transect
A
- mark out a line you want to study
- collect the data along the line
