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प्रश्न
Boojho wanted to test the presence of starch in leaves. He performed the following steps.
- He took a leaf and boiled it in water.
- He placed the leaf in a petri dish and poured some iodine over it.
He did not get the expected result. Which step did he miss? Explain.
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उत्तर
After boiling the leaf in water, it has to be boiled in alcohol so that chlorophyll is removed and the green colour of the leaf comes out. Boojho did not boil the leaf in spirit (alcohol) to remove the chlorophyll and therefore, he did not get the expected result (i.e. change in colour of the leaf).
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संबंधित प्रश्न
What causes the opening and closing of guard cells of stomata during transpiration?
Name the process by which water loss takes place through the leaves.
Distinguish between the following :
Cuticular transpiration and lenticular transpiration
Stomata of a plant open due to ______.
Boojho’s uncle was hospitalised and put on dialysis after a severe infection in both of his kidneys.
When does it become necessary to take such a treatment?
Stamen has two parts called ______ and ______.
Which one is not related to transpiration?
Define the term Vital capacity.
The process of evaporative loss of water from the aerial parts of a plant is ______.
(a) State whether the following statement are True or False.
(b) Rewrite the false statement in the correct form by changing either the first or the last word only.
Transpiration helps to cool the body of the plant.
