Question detail
How does the introduction of an invasive species affect an ecosystem?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Section B: The living world
Question
- A. It enhances biodiversity
- B. It disrupts existing food webs
- C. It stabilizes the ecosystem
- D. It has no significant impact
Answer
The correct answer is It disrupts existing food webs.
Explanation
The correct option is It disrupts existing food webs. It disrupts existing food webs is correct because it directly matches the approved learning objective to explain the impact of changing one component of an ecosystem. This belongs to Ecosystems within Section B: The living world, so the answer must stay focused on the geographical process, evidence, place, or impact named by the curriculum. The other options are weaker because they move away from Ecosystems, reverse the geographical relationship, or make a broader claim than the objective supports.
Common mistake
Misunderstanding Ecosystem Components
Students often think that changing one component of an ecosystem only affects that component without considering the interconnectedness of all components.
To fix this, students should study examples of how altering one factor, such as the removal of a predator, can lead to changes in population sizes of other species and overall ecosystem balance.
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Related practice questions
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