Science, asked by rajindraram50513, 8 months ago

Explain an activity to show that starch is present in a leaf.

Answers

Answered by goyalgitesh888

Answer: here is your answer if you like it please mark it as branliest

Explanation: To test leaves for the presence of starch,the leaf is boiled in water and then the boiled leaf is placed in a boiling tube containing 90% ethanol (ethyl alcohol). The ethanol boils and the green colouring (chlorophyll) is removed from the leaf. The iodine reagent is then added, which causes the green areas on the leaf, where starch is supposedly present, to turn to a blue-black colour. This indicates the presence of starch in the leaf.

Answered by shekharanand738

Answer:

when we pluck the leaf of the plant and rapped with black

polythene after some time it get decolourised it shows present of starch

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