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ɑׁׅ֮ꪀׁׅ꯱ׁׅ֒ᨰׁׅꫀׁׅܻꭈׁׅ

•By Observing the change in colour of the leaves. We will find that the leaf from the plant (which was inside the bell jar containing potassium hydroxide(KOH crystal)which absorbed the carbon dioxide), does not turn blue-black on adding iodine solution showing that no starch is present. So we can conclude that the photosynthesis cannot be carried out without carbon dioxide.

•°So, part (b)is correct leaf of only plant X will turn blue black in colour°

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Answer:

Part (b) is the correct answer.

The leaf will change it's colour.

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