The diagram below is an experiment conducted to study a factor necessary for photosynthesis. Observe the diagrams and then answer the following questions.
i) What is the aim of the experiment?
ii) Name the test performed on the leaf and the solution used for the test.
iii) What type of leaf was used for the experiment ? Give an example.
iv) What is the expected result of the above test on the parts labelled A and B?
v) Give a balanced chemical equation to represent the process of Photosynthesis.

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Solution

(i) To show that chlorophyll is necessary for photosynthesis.
ii) Starch test and potassium iodide are mainly used for the test.
iii) Variegated leaf/Coleus leaf (leaf having non-green and green regions)
iv) After performing the starch test, part A turns blue-black with Iodine solution and part B turns brown with Iodine solution.
v) $6 C O_{2} + 12 H_{2} O S u n l i g h t - ------ \to C h l o r o p h y l l C_{6} H_{12} O_{6} + 6 H_{2} O + 6 O_{2}$

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