Question

F) *short answer questions* (8x2=16)
a) how would you test the presence of starch in leaves?
b) why do we get instant energy from alucose?​

Answer 1

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Question 1 :- How how would you test the presence of starch in leaves ?

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Answer 1 :- Experiment to test the presence of starch in leaves :-

Take two healthy green plants of the same type . Keep one potted plant in a dark room for one or two days in order to remove all the starch from the leaves . Keep the other plant in sunlight . Now , take one leaf from each potted plant and put a few drops of iodine solution on them . Then note down the observation

Plants kept in light and dark conditions is a first question diagram and this diagram is draw in this space .

No blue black colour will be observed on the leaves of the plant kept in the dark room . This indicates the absence of starch . Blue Black colour will be observed on the leaves of the plant kept in sunlight . This indicates the presence of starch .

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Question 2 :- Why do we get instant energy from glucose ?

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Answer 2 :- Because it easily breaks down in the cell with the help of oxygen with provides instant energy to the organism . Glucose does not need digestion , it is directly absorbed into the blood .

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