How Ecosystems Function (WJEC Eduqas GCSE Geography B): Exam Questions

Tick (√) the choice below that gives the correct definition of biodiversity.

Describe the characteristics of a small-scale ecosystem in the UK you have studied.

Name of ecosystem:...........................................................

Study the diagram below. It shows part of a food web in mangrove forests.

Identify two primary consumers that will decline if the number of plankton were to be significantly reduced.

Ecosystems contain many different components.

Study Figure 3.1 below.

Complete the table below by adding the correct letter from Figure 3.1.

Describe the role of producers in an ecosystem.

Explain why a reduction in the number of secondary consumers would have an impact on a food web.

Sand dunes are an example of a small-scale ecosystem. They are mounds of sand formed by wind. Study Figure 3.2.

Describe changes in vegetation with distance from the sea. You should use figures in your answer.

Study Figure 3.3

What technique has been used to show the data in Figure 3.3?

Tick (√) the correct answer in the box below.

Study Figure 3.4.

Complete the sentences below using the information in Figure 3.4.

The largest store of nutrients is the ............................................................

The greatest flow of nutrients is from ........................................................ to ...............................................................

Explain why groups of people have different views about managing a small-scale UK ecosystem you have studied.

Name of ecosystem....................................................................

What is meant by the term ‘biome’?

Tick (√) one of the definitions below.

Complete the sentences that follow using three words from the text box below.

Ecosystems include both living and non-living components.

The living parts include ........................................................ and ........................................................ .

The non-living parts include solar energy, which is taken in by plants through the process of ............................................................................ .

Give one reason why there are more primary consumers than secondary consumers in a food web.

Study Figure 3.1.

Identify three differences between the two nutrient cycles shown in Figure 3.1.

1....................................................................................................................... 2....................................................................................................................... 3.......................................................................................................................

Describe how one small scale ecosystem you have studied in the UK benefits the local community.

Name of Ecosystem ................................................................................

Location.....................................................................................................

Study Figure 3.3 which shows information about one marine ecosystem under threat. Coral reefs are made of millions of tiny animals called coral polyps. Reefs are a very complex and fragile ecosystem.

Evaluate the advantages and disadvantages of protecting vulnerable ecosystems such as the Belize Barrier Reef. You may use the resources above and/or examples you have studied to support your answer.

Study Figure 3.1 which shows the climate of a hot semi-arid grassland area.

Tick (√) the two correct statements about the graph.

Complete the hot semi-arid grassland food chain below using the words in the box in the correct sequence.

Explain why vegetation can survive in the climate of hot semi-arid grasslands.