Question

W is an underground stem of its plant which is swollen with food it is commonly used as vegetable and also for making chips .when a solution X is added to cut surface of W then a colour Y is produced .the production of this colour tells us that surface of W contains a nutrient Z in it .what are W,X,Y,Z ? ​

Answer 1

Answer:

w is potato and x is iodine solution y is the purple colour z is proteins

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