B3f Controlling Plant Growth Questions

B3f Controlling Plant Growth Questions paper

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  • Created on: 02-05-12 09:08
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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 grow downward in response to g................ . We call this p................
g................ . The roots also show n................ p................ .
3. The shoot always grows u................ . In a grownup plant the shoot always grows
towards l................ , for photosynthesis. This is known as p................ p................ .
The shoots also show n................ g................ . This is how the shoots are able to
grow u................ , from the seed under the soil. (no light here!)
4. The diagram shows some seeds being grown in glass jar:
a. Which three labeled parts are the
shoots?..............................................................
b. Explain your answer:
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4. Mary is investigating how cress seedlings grow.

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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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Higher only:
5. What causes cress seedlings to grow towards light? (complete the following)
1. Plant hormones called a................., are made at the t......... of the
s..............…read more

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