A leaf was plucked from a plant on a sunny day and kept for 2 minutes in boiling water. It was subsequently immersed in boiling alcohol and treated with iodine solution. What will be the final colour of the leaf after the test?

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Q: 60 (CDS-I/2023)
A leaf was plucked from a plant on
a sunny day and kept for 2 minutes
in boiling water. It was subsequently
immersed in boiling alcohol and treated
with iodine solution. What will be the
final colour of the leaf after the test?

question_subject: 

Science

question_exam: 

CDS-I

Boiling alcohol removes chlorophyll, and iodine stains starch blue-black. The blue color indicates the presence of starch.