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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.
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 are stomata?
Fill in the blank:
Water is lost from the leaves by__________.
Define the termTranspiration
Distinguish between the following :
Cuticular transpiration and lenticular transpiration
Litmus paper is used to demonstrate transpiration from the leaves of the green plant.
Answer the following question.
Define and or explain the term:
Guttation
Stomata of a plant open due to ______.
During transpiration, there is a loss of ______
Will the ascent of sap be possible without the cohesion and adhesion of the water molecules? Explain.
(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.
