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ScotlandEnvironmental ScienceQuick questions
Area 1: Living Environment
Quick questions on Biodiversity: genetic, species and ecosystem diversity - SQA Higher Environmental Science
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is ecological importance?Show answer
Diverse ecosystems tend to be more stable and productive, recover better from disturbance, and maintain the food webs and nutrient cycles that keep the system working. Each species can play a role, so losing species can weaken the whole community.
What is economic importance?Show answer
Biodiversity provides ecosystem services of direct economic value: crops and wild foods, medicines derived from wild species, raw materials such as timber and fibres, pollination of crops by insects, water purification, and income from ecotourism. Many of these services would be expensive or impossible to replace artificially.
What is q1?Show answer
State the difference between species richness and species evenness. [2 marks]
What is q2?Show answer
Explain why a high diversity index value is generally good for an ecosystem. [2 marks]
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