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a) X - Iodine solution turned blue hence presence of starch
Y - Iodine solution retains its yellow brown colour hence absence of starch
b) X - Acts as a control, where all requirements are present.
Y - Carbon (IV) oxide is absent. It is absorbed by potassium hydtoxide pellets, hence the rate of photosynthesis could take place.
johnmulu answered the question on May 1, 2017 at 09:47
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The diagram below represents a set - up that was used to investigate certain process in a plant.
a) State the process that was being investigated
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Date posted: May 1, 2017. Answers (1)
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b) The diagram below represents a cell organelle(Solved)
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Date posted: May 1, 2017. Answers (1)
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Date posted: May 1, 2017. Answers (1)
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ii) B and C
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c) State two other factors that affect the rate of enzyme reaction
Date posted: May 1, 2017. Answers (1)
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In an experiment to investigate a factor affecting photosynthesis, a leaf of a potted plant which had been kept in the dark overnight was covered with aluminum foil as shown in the diagram below.
The set up was kept in sunlight for three hours after which a food test was carried out on the leaf.
a) Which factor was being investigated in the experiment?
b) What food test was carried out?
c) Why was it necessary to keep the plant in darkness before the experiment?
Date posted: May 1, 2017. Answers (1)
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A freshly obtained dandelion stem measuring 5 cm long was split lengthwise to obtain two similar pieces. The pieces were placed in solutions of different concentrations in petri dishes (L1 and L2) for 20 minutes. The appearance after 20 minutes is as shown
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Date posted: May 1, 2017. Answers (1)
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Date posted: May 1, 2017. Answers (1)
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The table below shows the concentration of sodium and iodine in sea water and cell sap of a plant
a) i) Name the process through which the plant cells take up sodium ions.
ii) Give a reason for your answer in (a) above
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ii) Give a reason for your answer in (b) (i) above
Date posted: May 1, 2017. Answers (1)
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Date posted: May 1, 2017. Answers (1)
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Date posted: May 1, 2017. Answers (1)
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Date posted: May 1, 2017. Answers (1)
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Date posted: May 1, 2017. Answers (1)
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Date posted: May 1, 2017. Answers (1)
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Date posted: May 1, 2017. Answers (1)
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