Food Web

Questions

Using the food web:

1. Name a producer.  
2. Name the primary consumer.  
3. If all the earthworms are killed by wormicides which organisms will be affected?  
4.  What organisms are prey for the badger.  
5.

If oOne of the site operators does not want badgers who are looking for food digging up the ground – suggest ways in which this might be prevented.  

6. What will happen to the number of hedgehogs if the land is sprayed with wormicides?  

  
Graph 1 shows the height of grass required for certain butterflies to survive.  

7.  Which butterflies can survive on both the airfield and the golf course?  
8.  Which butterflies can only survive on airfields?  
9. The government is worried about the declining numbers of skylarks. What reasons can you give for their absence from golf courses?  
10. Craneflies live on grass roots, this produces a gap below the surface and makes the grass spongy to walk on. Why is this a disadvantage on golf courses?  
11. Can you explain why one habitat has more primary consumers than the other?   
12. Describe how the number of species has changed with time in both habitats; can you explain reasons for this?  


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