Question 25
Photosynthesis and Plant NutritionIn testing for starch in a leaf, the leaf is boiled in alcohol to
- A.kill the cells
- B.soften the leaf
- C.enable chemicals penetrate the leaf
- D.decolourise the leaf
Show the answer and explanation
Answer: D (decolourise the leaf)
Explanation
Hot alcohol dissolves out the chlorophyll so that the blue-black iodine colour can be seen clearly.