Experiment: Two fish species were kept in water with rising CO₂ levels. Their gill movement and blood pH were measured.Observation: Fish A maintained blood pH better and showed slower breathing changes than Fish B.Question: What can be inferred?
Correct answer: D. Fish A has better acid-base regulatory mechanisms.
- A. Fish B is more resistant to pH stress.
- B. CO₂ has no effect on aquatic animals.
- C. Gill movement is unrelated to gas exchange.
- D. Fish A has better acid-base regulatory mechanisms.
Explanation
The correct answer is that Fish A has better acid-base regulatory mechanisms. This can be inferred from the observation that Fish A maintained blood pH better and showed slower breathing changes compared to Fish B. This indicates that Fish A has more effective mechanisms to regulate acid-base balance in response to rising CO₂ levels. The other options are incorrect because they do not align with the observation provided in the experiment.
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