BI-1053
Aerobic respiration
Biology · Secondary 3 · Medium · Aerobic respiration
In a respirometer experiment with germinating seeds and a carbon dioxide absorber, the coloured liquid in the capillary tube moves towards the seeds. What is the main reason for this movement?
- Oxygen is used in respiration and carbon dioxide is absorbed, reducing gas volume.
- Nitrogen is absorbed by the seeds, reducing gas volume.
- The seeds cool the air, causing it to contract.
- Water vapour from the seeds increases the gas volume.
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