Little tunny is a fish found in the Atlantic Ocean. The photograph shows a little tunny. (Source: © Picture Partners/Alamy Stock Photo) A student suggested that: The larger a fish is, the larger its heart will be. Devise a method that could be used to collect and analyse data to test this suggestion. 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Biology

IGCSE&ALevel

EDEXCEL

Exam No：wbi13-01-que-20240523 Year：2024 Question No：(d)

Answer:

An answer that includes 6 of the following points:
- use minimum of five fish (1)
- (of) different sizes (1)
- measure the \{length / mass / volume\} of each fish (1)
- measure the \{length / mass/ volume \} of each heart (1)
- detail of fish standardisation of measurement (1)
- detail of standardisation of heart \{measurement / dissection\} (1)
- plot a graph of fish size vs heart size / calculate ratios (1)
- carry out a (correctly named) correlation test / compare ratios (1)

Answer:

Knowledge points:

Solution:

Answer:

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