Organisms And Their Environment Flashcards
1
Q
What is meant by the distribution of an organism?
A
It is where an organism is found
2
Q
What environmental factors can affect the distribution of organisms?
A
- Temperature
- Availability of nutrients
- Amount of light
- Availability of water
- Availability of oxygen and carbon dioxide.
3
Q
How can data on the distribution of organisms can be obtained?
A
- Random sampling with quadrats
- Sampling along a transect.
4
Q
How is the mean number of organisms per quadrat worked out?
A
Total number of organisms
____________________
Number of quadrats
5
Q
How do you work out the population size?
A
Mean number of organisms per quadrat x Total area
6
Q
What is the main difference between using quadrats and using transects?
A
Quadrats is a sample on a random area, you use a random generator.
Transects is the study of the distribution of organisms along a long.
7
Q
How can you make your results more reliable?
A
Take a large sample size
