Page 74 - Viva ICSE Science 4 : E-book

E. Answer the following questions.

1. What are the functions of root?

2. What are the functions of stem?

3. Explain the structure of a leaf with the help of a diagram.

4. What are the useful things that we get from plants?

5. What is photosynthesis? How does it take place?

6. What is transpiration? How does it take place?

7. How will you prove the presence of starch in leaves?

THINK AND ANSWER

1. Name the grain which we boil in excess water and use its strained water to starch our
clothes.

2. If chlorophyll is the machine of a leaf, and carbon dioxide and water are the raw
materials that go into it, what would sunlight and food be?
(a) Fuel and product

(b) Force and product

TALK ABOUT

We get so many useful products from plants, but this involves cutting them down. Loss of plants is
a loss to the environment and living beings in it. Discuss the disadvantages of cutting plants. Also,

discuss how can we overcome this loss.

LINK AND LEARN

Use plant products to make decorative items. (Hint: Cotton can be used to make a soft toy.)

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