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ICSE Class X Biology 2023 Papers
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A potted plant with variegated leaves was kept in dark for 24 hours and then placed in bright sunlight. Answer the following questions. 
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Question : 67 of 74
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After the starch test what will be the colour of the yellow and green parts of the leaf? Give reasons to support your answer.
Solution:
The green parts of the leaf turns bluish black, showing the presence of starch. Yellow part of the leaf turns brown in colour due to absence of starch.
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