InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Show how co2 is necessary for plants ?? |
| Answer» Aim:\xa0To show that carbon dioxide is necessary for photosynthesis\xa0Procedure:\tTake a plant with destarched leaves.\tInsert one of its leaves in a conical flask containing potassium hydroxide.\tLeave the plant in sunlight.\tAfter a few hours, test the particular leaf and some other leaf of the same plant for the presence of starch.Observation:\xa0The leaf which was inserted in the conical flask stains brown, and the other leaf which is exposed to sunlight turns blue-black.Inference:Potassium hydroxide in the flask absorbs carbon dioxide; thus, due to the absence of CO2, the leaf fails to produce starch which proves that carbon dioxide is necessary for photosynthesis. | |