Organisation of an ecosystem - Edexcel

1

What is used for estimating the number of plants?

2

What is the name of the sampling square used in fieldwork?

3

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

4

Energy for all food chains comes from what source?

5

Producers are usually what?

6

How is energy in food chains lost?

7

What happens to the biomass at each stage in a food chain?

8

Which of these is systematic sampling?

9

How do decomposers break materials down?

10

How is efficiency of energy transfer calculated?