Question
SLPaper 1A
The diagram shows a respirometer used to measure respiration rate in germinating seeds.
[Source: used with the kind permission of the Nuffield Foundation and the Royal Society of Biology]
What is the expected direction of movement of the fluid at X and the function of the fluid at Y ?
| Movement of fluid at X | Function of fluid at Y |
|---|---|
| Down | Absorb CO₂ |
| Down | Produce O₂ |
| Up | Absorb CO₂ |
| Up | Produce O₂ |
