YEAR 9 BIO END OF SEMESTER 1 EXAM

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YEAR 9 BIOLOGY END OF SEMESTER 1 EXAM 1.Kylie investigates the importance of the elements contained in mineral salts for plants. Here are her results. (a) The first plant in the table was given all the mineral salts. Why did Kylie include a plant that was given all the mineral salts in her investigation? (2) (b) Kylie records her results by drawing a picture of each plant. What one measurement could she take to improve her results? (2) (c) Interpret the results for the following three plants. (i) The plant given all the mineral salts without nitrogen looks ………………………………because nitrogen is needed for……………………………….. (2) (ii) The plant given all the mineral salts without phosphorus is…………………… because phosphorous is needed for………………………………………………. (2) (iii) The plant given all the mineral salts without magnesium……………………………………….. is because magnesium is needed for …………………………….. (2)

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