Which method helps conserve fish stocks?
- A fishing all year
- B catching young fish
- C removing quotas
- D using nets with larger mesh sizes
Show answer
Answer: D
Free Conservation questions for IGCSE Biology (0610), part of Ecology & human influence. Each question has the answer and the marking points an examiner would look for.
Generate a full Conservation worksheet →All Ecology & human influence questionsWhich method helps conserve fish stocks?
Answer: D
Which term is described by this statement?
“A resource produced as rapidly as it is removed.”
Answer: A
What is a seed bank used for?
Answer: A
Fish stocks can be overexploited.
Describe two ways of making fishing sustainable.
Explain why a larger mesh size helps conserve fish stocks.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | quotas; net size; closed seasons Any 2 of: quotas; larger net mesh size; closed seasons/protected areas; restocking B2 | 2 |
| (b) | young fish escape and breed young/small fish can escape B1 they survive to reproduce B1 | 2 |
Sustainable resources can be maintained.
Define a sustainable resource.
Describe how forests can be managed sustainably.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | produced as rapidly as removed a resource that is produced as rapidly as it is removed, so it does not run out B1 | 1 |
| (b) | replanting; selective felling Any 2 of: replant trees after felling; selective felling; education/legal quotas B2 | 2 |
Endangered species can be conserved in different ways.
Suggest three ways of conserving an endangered species.
Give three reasons why conservation is important.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | protect habitat; captive breeding; legislation; seed banks; education Any 3 of: monitoring and protecting habitats; captive breeding programmes; legal protection; seed banks; education B3 | 3 |
| (b) | biodiversity; medicines; food chains; future resources Any 3 of: maintain biodiversity; source of medicines; stable food webs/ecosystems; ethical reasons; future resources B3 | 3 |
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