Question

The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.

Which of the following statements shows the correct results of Iodine Test performed on the leaf from plant X and Y respectively?

Options

• Blue-black colour would be obtained on the leaf of plant Xand no change in colour on leaf of plant Y.

• Blue-black colour would be obtained on the leaf of plant Y and no change in colour on leaf of plant X.

• Red colour would be obtained on the leaf of plant X and brown colour on the leaf of plant Y.

• Red colour would be obtained on the leaf of plant Y and brown colour on the leaf of plant X.

Answer 1

Blue-black colour would be obtained on the leaf of plant Y and no change in colour on leaf of plant X.