Page 22 - 新思维科学学生用书5 样章

1.2 Pollination, fruits and seeds

Think like a scientist 2

Observing insect pollinators

You will need:

plants that have flowers, a watch or timer

• Find four different plants with flowers.

Look for flowers that are brightly coloured

as well as some that do not have bright
colours, such as grass flowers.

• Observe the flowers.

What size and colour are they?
Do they have lots of pollen?

Do they have nectar?
• Predict how each flower is pollinated.

• Observe which types of insects visit the flowers.

• Count how many times the different insects visit the flowers in half an hour.
• Record your observations in a table like this one:

Name of Description of Prediction of how Insects that visit Number of
flower flower flower is pollinated the flower visits

• Draw a bar chart of the number of times each type of insect visited the flowers
you observed.

• Name the type of scientific enquiry you used in the activity.

Questions
1 Which flowers did insects visit the most often? Suggest a reason why.

2 Which insects visited the flowers most often?

3 Were your predictions about pollination correct?
4 a What pattern could you observe in the flowers visited by insects?

b Suggest a reason for the pattern.

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