Page 7 - 新思维科学学生用书9 样章

1 Photosynthesis and the

carbon cycle

1.1 Photosynthesis

In this topic you will:

• practise using the word equation for photosynthesis
• learn what photosynthesis is, how it happens and why it is important.

Getting started

Look at the pictures of the young maize (corn) plants.

The plants on the left have been given light, but the
ones on the right have not had light.
You may also be able to look at some actual plants that
have been grown in the light and in the dark.
With a partner, make a list of the differences you can

see between the two sets of plants.
Suggest what has caused these differences.

Key words

chlorophyll light intensity photosynthesis

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