Biology

Divya performed an experiment on photosynthesis. At the end of the experiment, she tested the experimental leaf for the presence of starch. During the starch test she first boiled the leaf in water and then in methylated spirit.

(a) Why did she boil the leaf in water?

(b) Mention the reason why she then boiled the leaf in methylated spirit.

Photosynthesis

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Answer

(a) Divya boiled the leaf in water to kill the cells of the leaf and stop all chemical reactions.

(b) She then boiled the leaf in methylated spirit to remove chlorophyll, making the leaf decolorized so the starch test colour change is clearly visible.

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