Pearson Edexcel IAL Biology 6P.4 Presenting data

Practise presenting practical results clearly in tables and diagrams, including raw data, means, medians, headings and units.

Exam points

draw tables with suitable layout, correct headings, units and all raw data entered
include calculated means or medians without putting units in the body of the table

[Maximum number: 3]

The photograph shows a young locust eating the leaves of a plant.

Figure for Question 6P.4—Presenting data question 1 — Edexcel A-Level Biology A2

Locusts can breed in large numbers and destroy crops, such as sorghum, in East Africa. A scientist observed that some varieties of sorghum were more likely to be eaten by young locusts. The scientist collected the seeds of two varieties of sorghum (A and B) and grew them in trays. Locust eggs were collected and hatched into young locusts. Twenty young locusts were placed in a cage containing 100 g of fresh sorghum leaves of variety A. The cage was kept at $30^{\circ} \mathrm{C}$ . After 24 hours, the leaves were removed and the mass of leaves eaten was calculated. This method was repeated with fresh sorghum leaves of variety B. The method was repeated six times for these two varieties of sorghum leaves. The results: Mass of leaves eaten of variety A 17.317.217.517.016.716.9 Mass of leaves eaten of variety B 17.817.917.717.617.817.4

Draw a suitable table to display the data and your calculated means for the mass of leaves eaten for these varieties of sorghum.

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6P.4—Presenting data question 1