Page 25 - 新思维科学学生用书5 样章

1 Life cycles of flowering plants

Activity

Observe and draw a fruit

You will need:

a fruit, a knife, a pencil, paper

Be very careful when using a sharp knife.

• Carefully cut open the fruit or ask an adult to help you.

• Make a drawing of the cut fruit. Label your drawing.
• Is the skin smooth or rough?

• What colour is the flesh of the fruit?
• Is the flesh firm or soft?

• Is the flesh dry or juicy?

• What colour are the seeds?
• How many seeds can you count? Are there more than ten?

• Are the seeds big or small?

Why must seeds be spread?

Have you ever found seeds stuck in your socks? Plants need to spread their seeds away

from themselves. We call this seed dispersal. Seed dispersal happens when a fruit is
ripe. The seeds are ready to grow into new plants.

Seeds grow into young plants called seedlings. Seedlings need room to grow. They

also need light and water. Seedlings cannot grow to be healthy plants if they all have
to share water and light in a small area. Plants are adapted to disperse their seeds in

different ways.
The pictures show how the fruits of some plants disperse their seeds.

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