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The following measures could be used to prevent the spread of this fruit fly across Australia - HSC - SSCE Biology - Question 13 - 2015 - Paper 1
Question 13
The following measures could be used to prevent the spread of this fruit fly across Australia. 1. Australia-wide release of infertile fruit flies 2. Aerial spraying... show full transcript
Worked Solution & Example Answer:The following measures could be used to prevent the spread of this fruit fly across Australia - HSC - SSCE Biology - Question 13 - 2015 - Paper 1
Step 1
To prevent the spread of this fruit fly across Australia, which combination of measures would be most practical to use?
Answer
To determine the most practical combination of measures to prevent the spread of the fruit fly, we must consider the efficiency and effectiveness of each option.
- Measure 1 (Australia-wide release of infertile fruit flies): This method can effectively reduce the reproduction of the fruit flies, making it a proactive strategy.
- Measure 2 (Aerial spraying of orchards throughout the country): This action can help to manage existing populations of fruit flies, thus reducing their spread.
- Measure 3 (Spot spraying of newly affected orchards in Western Australia): Targeted intervention can effectively control localized outbreaks but may not be sufficient for widespread prevention.
- Measure 4 (Stopping the transport of fruit from Western Australia to other states): Preventing the movement of potentially infested fruits is a critical strategy to stop the spread to unaffected areas.
Considering the above measures, combination D (3 and 4) offers a highly practical approach: spot spraying targets immediate threats while halting fruit transport limits the potential spread across states. Therefore, the answer is (D) 3 and 4.