Page 75 - Viva ICSE Science 4 : E-book

Do and Learn

Group Activity

Perform the given activity in pairs.
1. Take the given fruits and vegetables.

potato banana sweet potato watermelon

grapes colocasia cucumber orange

2. Cut each fruit and feel the cut surface with your fi ngers. You will fi nd that some of them
have a sticky feel, while others have a watery feel.

3. Name the ones that have a sticky feel.
4. Now test them with iodine solution.

5. What do you observe in each case?

Turns blue-black Colour does not change

6. What does it prove? Write your answer in each case.

Contains proteins
Contains starch Project Time

Now discuss in class and make a list of at least ten more Make a model of plant showing
food items that contain starch. Include grains in your its diff erent parts. You may use
experiment. to make the model.
thermocol, playdough or clay

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