Extended open response questions require longer answers than structured questions that have fewer marks. Open response questions are usually worth 6 marks, but some are worth fewer marks.
It is wise to plan your answer first by making some notes. This will help you to include all the key points.
To gain full marks, you need to:
Open response questions often use these command words:
Open response questions may be synoptic questions, which bring together ideas from two or more topics. For example, a question about fertilisers could include ideas about covalent substances, acids and alkalis, chemical calculations and effects on the environment.
The answers shown here give marking points as bullet points. You do not usually need to include all of them to gain full marks, but you do need to write in sentences, linking them logically and clearly.
This page contains AQA material which is reproduced by permission of AQA.
Light intensity, carbon dioxide concentration and temperature are three factors that affect the rate of photosynthesis.
How would you investigate the effect of light intensity on the rate of photosynthesis? [6 marks]
Below shows some of the apparatus you might use.
You should include details of:
Plants transport many substances between their leaves and roots.
The diagram below shows the direction of movement of substances through a plant.
Describe how ions, water and sugar are obtained and transported through plants.
In your answer you should refer to materials moving upwards in a plant and to materials moving downwards in a plant. [6 marks]
In the points below, P = process; V = vessel; M = material
A student investigates the rate of respiration in maggots.
This diagram shows the equipment he uses.
When maggots respire they take in a gas from the air and release a different gas.
Solution A absorbs the gas released.
At the start of the investigation the student records the distance of the water droplet from the bend in the capillary tube.
Explain what happens to the water droplet as the maggots respire. [4 marks]