Question

how will you test a leaf for starch ? Mention any precautions you will take

Answer 1

First we will heat a plant leaf in boiling water for 30 seconds (this stops its chemical reactions) heat it in boiling ethanol for a few minutes (this removes most of its colour) wash with water and spread onto a white tile. add iodine solution from a dropper. If it turns blue black it shows that it contains starch

Answer 2

HERE IS YOUR ANSWER
First we will heat a plant leaf in boiling water to (this stops its chemical reactions) heat, it in boiling ethanol for a few minutes (this removes most of its colour) wash with water and spread onto a white tile. add iodine solution from a dropper. If it turns blue black it shows that it contains starch.

PRECAUTIONS are.

1) do not overboil or underboil the leaf

2)do not overstrain or understrain the leaf

3)the selected leaf for the test should be a green healthy leaf

HOPE THIS WAS HELPFUL
PLZZZ MARK AS BRAINLIEST ANSWER.