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प्रश्न
When carrying out the starch test on a leaf, why is it important to boil the leaf in alcohol?
(a) to dissolve the waxy cuticle
(b) to make the cells more permeable to iodine solution
(c) to remove the chlorophyll
(d) to stop chemical reactions in the cells.
उत्तर
(c) to remove the chlorophyll
When carrying out the starch test, it is important to remove the chlorophyll by boiling the leaf in alcohol. This is done because the green colour of the chlorophyll interferes with the iodine test.
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संबंधित प्रश्न
Give a brief description of the process of synthesis of food in green plants.
Apart from sunlight and chlorophyll, what other things are required to make food by photosynthesis?
what are the by-products of photosynthesis ?
The process in plants which converts light energy into chemical energy.
Write a chemical equation to show the process of photosynthesis in plants.
Explain the mechanism of photosynthesis.
The oxygen liberated during photosynthesis by green plants comes from:
(a) glucose
(b) water
(c) carbon dioxide
(d) chlorophyll
Explain why, plants have low energy needs as compared to animals.
Distinguish between: Autotrophic nutrition and Heterotrophic nutrition.
The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.
Which of the following statements shows the correct results of Iodine Test performed on the leaf from plant X and Y respectively?
