Photo AI
The diagram shows a potometer - OCR Gateway - GCSE Biology - Question 1 - 2021 - Paper 1
Question 1
The diagram shows a potometer. Cut leafy twig What is the purpose of the water in X? A) To provide water for the leafy twig. B) To reset the gas bubble to the st... show full transcript
Worked Solution & Example Answer:The diagram shows a potometer - OCR Gateway - GCSE Biology - Question 1 - 2021 - Paper 1
Step 1
What is the purpose of the water in X?
Answer
The primary purpose of the water in X is to reset the gas bubble to the start of the scale. This ensures accurate measurement of water uptake by the leafy twig and allows for consistent readings during the experiment. By positioning the gas bubble at the beginning of the scale, any displacement caused by water loss through transpiration can be accurately quantified.