Page 37 - 新思维科学学生用书5 样章

1 Life cycles of flowering plants

Continued

Questions

Discuss these questions.

1 a Bees are pollinators. Name two other pollinators you know of.
b Why are pollinators important?

2 a What is a pesticide?
b Why do farmers and gardeners use pesticides?

3 Is it good to use pesticides? Say why or why not.

4 Why is it a problem if bees die or have fewer young?
5 Pesticides harm pollinators. How else do you think pesticides can affect the

environment?
6 What do you think would happen to humans if there were no more pollinators?

7 Why should people not use pesticides when plants are flowering?

8 Some people use other substances to get rid of pests. Think of, or find out
about, other ways to keep pests away without using pesticides.

Now choose either Part 2 or Part 3.

Part 2
Use the information you have read, as well as the ideas from your discussion, to make

an information sheet about pollinators and pesticides for people in your area.

Draw pictures or use photos or pictures from magazines to help you tell people:
• why bees and other pollinators are important

• why pesticides are harmful to pollinators
• how to use pesticides safely.

Part 3

Speak to people in your local community who grow plants. Ask the following questions:
• Which plants do they grow?

• Which pollinators pollinate their flowers?
• Do they use pesticides?

• When do they use the pesticides?

• How do they apply the pesticides – in a liquid spray or a powder?
• If they do not use pesticides, how do they protect their plants from pests?

Write a short report on your findings.

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