Question

How can you test the presence of starch in a leaf? What is the presence of starch indicative of ?

Answer 1

Answer:

Step 1: take a fresh leaf is taken.

Step 2:  boiled it in water for few minutes to soften the cells in the leaf.

Step 3:  dip it in the iodine solution.

Step 4: The color of the leaf will changes into blue-black color when iodine is added to it which shows the presence of starch in it.

presence of starch means the presence of carbohydrates

Answer 2

Answer:

presence of whitetish color in rich shows starch.

Explanation:

when we can wash the rice before cook,the white color with water can we see that can shows us presence of starch &carbohydrate