Unit 6 · Plant Nutrition

Question Bank

Cambridge IGCSE Biology 0610 · 50 questions

Q22Plant Nutrition

Why is ethanol used when testing a leaf for starch?

(a)To kill the cells

(b)To soften the leaf

(c)To remove chlorophyll

(d)To stain starch

Correct answer: (c) To remove chlorophyll

Explanation: Ethanol dissolves chlorophyll so the iodine colour change can be seen.

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