Question

Sunlight is necessary for photosynthesis observation To test the digestion of foods starts in mouth observation Transpiration of plants To feel the pulse and count the pulse rate in your body Growing onion bulb ginger in pots Growing hisibiscus plant by stem cutting

Answer 1

Answer:

Explanation:

Only those portions of the leaf that were exposed to sunlight could photosynthesize and hence, change to a blue-black color when tested with iodine. ​ The region that was closed by black papers on both sides were not able to photosynthesize and hence the color did not appear.