Question

The following diagram explains the importance of a factor necessary for a special
physiological phenomenon in green plants. ‘A’ indicates the appearance of the leaf before
the start of the experiment while ‘B’ indicates the appearance of the leaf after the experiment.
Study the diagram carefully and answer and questions :

Answer 1

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Answer 2

1. ............
2. sunlight is necessary for photo synthesis
3. sunlight is essential
4. starch is not formed in that areas