Free response questions
Free response questions will appear throughout both exam papers (Breadth and Depth), and at both Foundation Tier and Higher Tier.
These questions provide answer lines for you to write your answer, and may sometimes also provide a blank space for you to draw a diagram or show your working out.
The number of answer lines and the number of marks for the question are guides to the amount of detail to include in your answer. A question worth 1 mark with only one answer line probably only requires a one-sentence answer, or perhaps just a single word or phrase. For questions with more marks and more answer lines you will have to go into more detail or give specific data points, eg:
- the number of deaths from cardiovascular disease increased [1 mark]
- the number of deaths from cardiovascular disease increased by 50% [2 marks]
Free response questions often start with a command word such as 'describe' or 'explain'. It's important to understand the different types of answers required by 'describe' and 'explain'. As a rule of thumb:
- describe what happens, when and where
- explain how and why it happens ("it happens because…")
Other command words you might see include:
- 'write down' (give a short answer, without explaining it)
- 'suggest' (use your scientific knowledge and understanding to give a sensible answer in an unfamiliar context)
- 'compare' (write about the similarities and differences between two things)
- 'discuss' (write about the issues related to a topic, and talk about arguments for and against)
Sample question 1 - Foundation
Question
In some areas of the UK, dogwhelk numbers are decreasing.
This reduces biodiversity.
Give two benefits of maintaining biodiversity. [2 marks]
OCR 21st Century, GCE Biology, Paper J257, 2016.
Any two from:
- Organisms rely on one another for survival OR interdependence
- An example of interdependence eg food/shelter/reproduction
- Maintaining genetic diversity
- Organisms may be required in the future for medicines
- Maintains the stability of the food web
Sample question 2 - Foundation
Question
Sea anemones can reproduce asexually.
Give one advantage and one disadvantage of this method of reproduction. [2 marks]
OCR 21st Century, GCE Biology, Paper J257, 2016.
Advantage:
- (can be) fast
- OR no need to find a mate
Disadvantage:
- lack of genetic diversity
- OR are all genetically identical
Sample question 3 - Higher
Question
In 1991 a type of genetically modified tomato was being developed.
This tomato contained a gene from the arctic flounder fish.
Arctic flounder fish live in very cold conditions.
How would the tomato with the arctic flounder fish gene be of benefit to modern agriculture? [1 mark]
OCR 21st Century, GCE Biology, Paper J257 - Higher, 2016.
The tomato is able to grow in colder conditions OR the tomato is less likely to be damaged by cold conditions.
Sample question 4 - Higher
Question
Knowledge of genetics and DNA analysis has allowed scientists to group organisms based on similarities in their DNA.
It also enables them to draw conclusions about the evolutionary relationships between organisms.
It is possible to draw an evolutionary tree as seen below to highlight these relationships.
Are hippos more closely related to whales or to pigs?
Justify your answer using evidence from the evolutionary tree. [2 marks]
Remember to state AND justify your answer
OCR 21st Century, GCE Biology, Paper J257 - Higher, 2016.
- Whales
- Because they are closer to hippos on the evolutionary tree