For Experiment 1, calculate the average ethylene production rates and their standard errors from the class data. Draw an appropriately labelled graph of the data and describe any patterns, trends, relationships or differences you can see in the data for the four commodities. Assign means to groups. Explain any manipulation of the data you may have performed to remove any outlying values. (14 marks)

For Experiment 2, calculate the average h, a* and b* values and their standard errors from the class data for the test bananas. Draw three appropriately labelled graphs of the data and describe any patterns, trends, relationships or differences you can see in the data. Assign means to groups. Explain any manipulation of the data you may have performed to remove any outlying values. (20 marks per graph)

Produce a table describing the appearance of the bananas after treatment and ripening. Describe any trends or differences you see in the data. (10 marks)

Now answer the following questions (use the questions as headers):

(A) Why were the treatments with ethylene and the “nothing added” treatment included in this experiment? (4 marks)

(B) Why were differences found in ethylene production by the apples, the green and ripe bananas, and the grapes found? (8 marks)

(C) Why were differences found in ethylene production between the wounded and unwounded bananas? (4 marks)

(D) What were the relationships between ethylene production by the apples, the ripe bananas, and the grapes on the ripening of the test bananas? (6 marks)

(E) What implications do the results from this practical have for the storage of fresh produce? (10 marks)

(F) Why did temperature have an affect on the ripening of the test bananas? (10 marks)

(G) How is colour measured and assessed using a colourimeter and what parameters can be measured using this instrument? (10 marks)

(H) What changes in biochemistry caused the changes in colouration that can be seen in the test bananas? (6 marks)

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