Experiment: Mango trees were grown in soils with varying nitrate levels. Leaf color and fruit size were recorded.Observation: High nitrate levels led to darker green leaves but smaller fruit size.Question: What interpretation best fits the data?
Correct answer: A. Excess nitrogen promotes leaf growth at the expense of fruiting.
- A. Excess nitrogen promotes leaf growth at the expense of fruiting.
- B. Nitrates improve all aspects of plant growth.
- C. Fruit size is unrelated to soil nutrients.
- D. Nitrate-deficient plants always die.
Explanation
The correct answer is Option A: Excess nitrogen promotes leaf growth at the expense of fruiting. This interpretation aligns with the observation that high nitrate levels led to darker green leaves but smaller fruit size. Options B, C, and D are incorrect as they do not accurately reflect the relationship between nitrate levels and plant growth observed in the experiment.
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About Scientific Reasoning
Scientific reasoning evaluates hypotheses through observations, variables, controls, measurements and experimental results. Questions involve identifying independent and dependent variables, recognising a fair test, interpreting tables or graphs, distinguishing evidence from opinion, and deciding whether data supports, rejects or leaves a hypothesis unresolved.
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