2.4

Question 1

True or false : living organisms form communities and understand the relationships within and between these communities

Answer 1

True

Question 2

Identify 6 physical factors which may affect organisms.

Answer 2

Temp
Nutrients 
Light
Water
Oxygen 
Carbon dioxide

Question 3

What is a quadrat

Answer 3

Wooden or plastic square

Question 4

What do quadrats enable you to do?

Answer 4

Measure organisms found in different habitats

Question 5

How do you use a quadrat? What is the method called called?

Answer 5

Random sampling

Quadrat thrown over shoulder and count numbers of different organisms found writhing the quadrat.

Re throw at least 3 times

Question 6

Why do we repeat random sampling?

Answer 6

Ensure we get valid results

Question 7

Why do we use sampling across a transect ?

Answer 7

To see how the numbers of organisms change across a habitat

Question 8

What is a transect line?

Answer 8

Tape measure

Rope

Question 9

How could you carry out sampling along a transect?

Answer 9

Use a rope and mark out every 2 metres.

Place the quadrat at each interval

Measure organisms