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Question
A destarched potted plant is kept in sunlight for 8 hrs as shown in the image below. After 8 hours, leaf C and D are plucked and iodine solution added. Which of the leaves will turn blue black after addition of iodine?
A destarched potted plant is kept in sunlight for 8 hrs as shown in the image below. After 8 hours, leaf C and D are plucked and iodine solution added. Which of the leaves will turn blue black after addition of iodine?
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Solution
The correct option is D Only C
Plants need water, carbon dioxide, chlorophyll, and sunlight to photosynthesise.
KOH solution absorbs the carbon dioxide that is produced during respiration. In absence of carbon dioxide, leaf D is unable to photosynthesise and produce starch. In absence of starch, iodine remains yellowish brown.
Leaf C is able to photosynthesise and produce starch turning the leaf blue black after iodine is added.
Plants need water, carbon dioxide, chlorophyll, and sunlight to photosynthesise.
KOH solution absorbs the carbon dioxide that is produced during respiration. In absence of carbon dioxide, leaf D is unable to photosynthesise and produce starch. In absence of starch, iodine remains yellowish brown.
Leaf C is able to photosynthesise and produce starch turning the leaf blue black after iodine is added.
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