New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    What will be the colour reaction with iodine of a plant

    kept in dark for few days?
    A White Correct Answer Incorrect Answer
    B Deep blue Correct Answer Incorrect Answer
    C Yellow or brown Correct Answer Incorrect Answer
    D Green Correct Answer Incorrect Answer

    Solution

    If a plant is kept in the dark, it will not photosynthesize and starch cannot be produced, so the iodine test for starch will turn yellow or brown instead of deep blue.

    Practice Next