IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Human interactions with environments-Over Exploitation
Topic :Human interactions with environments– Weightage : 21 %
All Questions for Topic : Human influences,Habitat Change or destruction,Pollution/Conservation,Over Exploitation,Mitigation of adverse effects
Question
Fish are an important part of many diets around the world. As the human population is increasing, the amount of fish eaten per person is also increasing. This increase in demand for fish has led to unsustainable fishing practices. Decreasing fish populations are a world-wide problem threatening food supplies. It is important to create a fair solution to ensure that everyone has access to adequate food supplies without damaging ecosystems.
The interactive graphic below gives some information to support this task.
This media is interactive
Click on the headings on the left to show the information.
Question
a.Use the interactive graphic to state one reason for a decrease in the total number of wild fish since 1950 . (1 mark)
▶️Answer/Explanation
Ans:
Accept any reasonable suggestion, for example (1 max):
- over fishing
- habitat loss
- pollution
- increased fish consumption (from human population increase)
Question
b.Suggest how technology has allowed more fish to be caught.(2 marks)
▶️Answer/Explanation
Ans:
Accept any two reasonable suggestions, for example (2 max):
- sonar has helped fishermen locate fish
- (sonar can therefore) allow fishermen to catch more fish
- larger boats have allowed fishermen to catch more fish at one time
- GPS has allowed boats to be more accurate at locating fishing areas and tracking fish
- Technical use of larger nets such as trawling or dredging or new materials