Biology-10th Life Processes CBSE Board 2024 Medium
Two test tubes A and B are taken, each containing one mL of starch solution. Add 1 mL of saliva to test tube…
Two test tubes A and B are taken, each containing one mL of starch solution. Add 1 mL of saliva to test tube ‘A’ only and leave both the test tubes undisturbed for a few minutes. Now add a few drops of dilute iodine solution to both the test tubes.
- (a)Which one of the two test tubes shows change in colour ? Write the changed colour observed in this test tube.
- (b)What can we conclude from this activity ?
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