Biological Control - Advantages and disadvantages table in GCSE Biology

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Created by: Claire Hagger
Created on: 27-05-13 19:22

Biological Control

Advantages

No chemicals are used so there's less pollution, disruption of the food chain and risk to people eating the food that has been sprayed
There's no need to keep repeating the treatment like you would with chemical pesticides

Disadvantages

The predator you introduce may not eat the pest
The predator could eat a useful species
The predators population may increase and get out of control
The predator may not stay in the area where it is needed

Evaluation

Removing an organism from a food web can disrupt all the others around it so you have to be very careful. Overall biological control is a better, safer method of control than using pesticides.

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