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 ?

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Answer 1

Answer:

W- potato

X- iodine solution

Y- blue black color

Z- starch

Explanation:

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Answer 2

Answer:

• W is potato
• X is iodine solution
• Y is blue black color
• Z is starch i.e carbohydrate.

Explanation:

• A potato is a tuber, which is an underground modification of a stem. The tuber is the branch of the main stem which accumulates food in it and swells up.
• Numerous axillary buds, also known as eyes, are developed on the surface of the tuber and are capable of developing into the new plant under favorable conditions.
• To determine the presence of starch in potatoes, an Iodine test is done using an Iodine solution.
• When the iodine solution is added to the surface of the potato, it turns blue-black.
• The presence of a blue color indicates the presence of starch, a type of carbohydrate.

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