Biodiversity - Eduqas

1

What is the name for an organism that scientists look for to determine levels of pollution?

2

Which of these is an indication of high levels of water pollution?

3

Which of these can be used as an indicator species for air pollution?

4

Why is it important to take a random sample when using quadrats?

5

On a 200 m2 field 50 samples were taken and 35 slugs found. Estimate the population of slugs in the whole field.

6

A scientist is interested in how the distribution of plants change along a sand dune. Which method would they use to investigate this?

7

Why is biodiversity important for scientists?

8

What is biological control?

9

What do we call an organism which is introduced into an area that it does not naturally inhabit?

10

If a scientist captured and marked 44 trout in a lake and returned a week later to capture 22 marked trout and 28 non marked. Estimate the population of trout in the lake