Investigating ecosystems

1

What term is used for the number of organisms of a species in a habitat?

2

What is a habitat?

3

What is an environment?

4

A 0.25 m2 quadrat was placed in a 100 m2 field. Five daisy plants were counted under the quadrat. What is the estimated number of daisies in the field?

5

Why should a quadrat be placed randomly?

6

During some fieldwork, 6 voles were trapped, marked and released. Three days later, 25 voles were trapped. 3 of these had marks. What was the approximate population of voles?

7

Which device is most suited to catching small vertebrates such as mice?

8

What is a transect?

9

Which of these is an example of an abiotic factor?

10

What is meant by biodiversity?