B2.4

Question 1

What do living organisms form

Answer 1

Communities

Question 2

What are the physical factors that may affect an organism

Answer 2

Temperature
Availability of nutrients
Amount of light 
Availability of water 
Availability of oxygen and CO2

Question 3

How can quantitive data on the distribution of organisms be obtained

Answer 3

Random sampiling with quadrats

Sampling along a transect

Question 4

How to carry out quadrant experiment

Answer 4

1) place quadrant at random point
2) count organisms in quadrant
3) repeat placing and counting
4) work out a mean
5) repeat in second sampling area
6) calculate mean
7) compare two areas

Question 5

Population size

Answer 5

Mean number per m^2 X total area

Question 6

How To use transect

Answer 6

Mark out line on the area u want to study

Count organisms that touch line

Question 7

How to make results of quadrant more reliable

Answer 7

Larger sampling area

More throws

Question 8

How to make results of transect more valid

Answer 8

Control other variables that affect the distribution so it is not by chance

Use random samples