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B3f Controlling Plant Growth

1. The main jobs of roots of a plant are:
a. The root a................ the plant
b. To get w................ and m................ from the soil

2. Whatever way a seed is planted in the soil, the roots always grow d................ .
This is because:
The roots…

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She wants to do an experiment to find out if cress seedlings grow towards light.
Describe how she should do her experiment.
In your answer, include
· how to set up the equipment
· what to look for
· how to make it a fair test.
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