1. Boojho wanted to test the presence of starch in leaves. He performed the following steps.
(1) He took a leaf and boiled it in water.
He placed the leaf in a petri dish and poured some iodine over it. He did not get the expected result. Which step did he miss? Explain.

Question

1.	Boojho wanted to test the presence of starch in leaves. He performed the following steps.
(1)	He took a leaf and boiled it in water.
He placed the leaf in a petri dish and poured some iodine over it. He did not get the expected result. Which step did he miss? Explain.

MyClass24 · Accepted Answer

To remove the green colour of the leaf, firstly the leaf has to be boiled in water next it has to be boiled in alcohol so that chlorophyll comes out.
Boojho missed the step of not boiling the leaf in the alcohol which removes the chlorophyll and therefore, he did not get the expected result (i.e. change in colour of the leaf).

1. Boojho wanted to test the presence of starch in leaves. He performed the following steps. (1) He took a leaf and boiled it in water. He placed the leaf in a petri dish and poured some iodine over it. He did not get the expected result. Which step did he miss? Explain.