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. (2) 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

Philoid · Accepted Answer

Boojho didn’t get the result as he boiled the leaf in water instead of alcohol. Alcohol removes green colour (chlorophyll) from the leaf. It is necessary to remove green colour (chlorophyll) from the leaf because it interferers with the test of starch.

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.(2) 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.

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.

(2) 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.