Topic B7-Ecology

Question 1

What are three examples of Abiotic factors?

Answer 1

Light intensity
Temperature
Moisture level

Question 2

What are three examples of Biotic factors?

Answer 2

New predators
Competition
Availability of food

Question 3

What are the four steps to study the distribution of small organisms?

Answer 3

1) Place a 1m^2 quadrant on the ground at a random point within the first sample area.
2) Count all the organisms within the quadrant
3) Repeat steps 1 and 2 as many times as you can
4) Work out the mean number of organisms per quadrant within the first sample

Question 4

What are the three steps to study the distribution of organisms along a line?

Answer 4

1) Mark out a line in the area you want to study using a tape measure
2) Collect data along the line by counting all the organisms you’re looking for that touch the line
3) Or, by using quadrants placed next to each other or at intervals along the line